Tower Walls Mac OS
Tower Walls Mac OS
- Apple Mac Pro 3.7 GHz Quad-Core 12GB Memory 256 HD Desktop Computer - ME253LL/A (Brand-New, 1 Year Warranty, Corporate Packaging) Form Factor: Tower Graphics: Dual AMD FirePro D300 (3GB GDDR5 each) Type: Business Desktops & Workstations Colors: Black Model #: ME253LL/AOB Item #: 9SIA5E676G9010 Return Policy: View Return Policy $2,999.99 –.
- Download Tower for Mac to commit to Git easily. Tower has had 4 updates within the past 6 months.
Nyan Cat: Lost In Space. 0 Nyan Cat: Lost In Space is an Arcade, 2D, Platform, and Single-player. Yoot Tower (Mac abandonware from 1998) To date, Macintosh Repository served 1443179 old Mac files, totaling more than 286942GB!
OS X Yosemite UI Design
When we had our first look at Yosemite back in 2014 it became clear to us that Tower would have to undergo a general visual update. Mac OS X Yosemite is publicly available since October 16, 2014, and has been well received generally. By now, more than 80% of all Tower users are running on Yosemite - which underlines the necessity of adapting Tower as much as possible to the latest OS X release.
Yosemite Core Design Changes
Before one starts to redesign a Mac OS X app for Yosemite it's important to get into the new design paradigms introduced by Apple. Over the last couple of years Apple made three major UI releases: Mac OS Panther, Leopard and Lion. Yosemite yet marks another shift in paradigms.
Apple now emphasizes Simplicity, Consistency and Depth to give users a content-focused experience.
New System Font
For the first time since OS X was released Apple changed the System font from a slightly ornamental Lucida Grande to a simpler and rather geometric Helvetica Neue with less variation and ornamentation. There have been lots of articles and discussions about whether changing the system font to Helvetica Neue was a good idea. Especially in smaller sizes on non-retina displays Helvetica Neue has its weaknesses.
Despite its grand reputation, Helvetica can’t do everything. It works well in big sizes, but it can be really weak in small sizes. Tobias Frerer-Jones
However you might feel about Helvetica Neue, changing the system font at least emphasizes how serious Apple is about becoming 'simpler' and more consistent across its own platforms and inside the system itself. Helvetica Neue already sneaked in before Yosemite in apps like Notes, iTunes, and iPhoto, so using it as the new default system font is only consequent.
Simplified and Consistent App Icons
Another major step towards simplicity and consistency is taken by simplifying and systemizing App Icon Styles. Over the past years, app icons diverged and started to look very different and inconsistent. Yosemite introduces two basic icon styles along with a couple of guiding principles:
Realistic Icons are used by Preview, Mail, Photo Booth and others. The new realistic icon look is simplified and features the same light sources, perspective, and rendering.
Additionally, a consistent angle of 9° is used when depicting tilted app icons like Contacts or Calendar. Why the tilted angle you might ask? Apple is using the icon tilt for quite a while now to make app icons easier distinguishable from documents or folders.
Graphical icons live inside a round shape and feature a strong icon with a consistent emboss effect. Picking the right icon style for your app depends on what represents your app best.
Think of your app icon as your calling card, and spend the resources necessary to ensure that it makes the right impression on users. Apple Human Interface Design Guidelines
Does depicting a real-world object help users understand the virtual version? Does the addition of realism enhance both understanding and usability? Feel free to modify a real-world depiction if it helps to enhance the user's understanding. Apple encourages you to take out everything that isn't necessary and only adds visual clutter.
Translucent and Vibrant UI elements
Depth as a design principle is achieved with the new translucency and vibrancy features, together with subtle gradients and shadows as already used before across the app interface.
Translucency can be used in the app's sidebar, toolbar and overlays. The effect doesn't only make the background shine through in a transparent and blurred way, it also modifies the colors underneath to make them appear less muddy.
Vibrancy goes hand in hand with translucency. It affects UI elements on translucent backgrounds by absorbing color from content that’s underneath.
Brighter and Flatter UI Elements
All UI elements have been updated to match the general brighter and flatter design direction. The same applies to window chrome which now features a brighter and less intense color gradient.
Bringing Tower to Yosemite
A major priority of Tower has always been a native and integrated feel on Mac OS X. We do so by following Apple's recommendations about UX/UI patterns and technical implementations. A positive side effect of this approach is the capability of delivering relatively fast updates when new system versions are released.
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App Icon
We changed Tower's app icon quite a bit to achieve a simplified, yet realistic look over the course of multiple iterations.
All details that do not contribute to a better understanding of the app icon are gone. We now also use a light setup which resembles the one Apple is using for its new icons — Light blue and orange light sources were added from opposing sides. The perspective is adjusted to make the icon look more consistent next to the other ('realistic') icons in the dock.
Redesigning the window area was hard. After coming up with different versions of the inner life behind the glass we decided to get rid of everything inside the Tower icon since it only led to visual clutter without contributing to a better understanding of the app icon. Especially in smaller sizes like in the dock where users will see the app icon most of the time, superfluous details (like a crew behind the glass) only led to fuzziness.
The initial Tower 2 Yosemite app icon release had a comic glass material look which wasn't in line with the rather realistic look of the app icon. The latest Tower app icon window area is more consistent with the general app icon look and features additional translucency to let the background shine through. This does not only play nicely with the translucency feature of OS X Yosemite, it also allows the app icon to adapt to the general color mood of the user's system depending on the Desktop background or current context of the icon.
Toolbar & Navigation-Bar
The Tower toolbar contains default UI Elements, so the basic design is dictated by system defaults. We adapted the new button look and made a few changes to the 'secondary' button icons.
Since we are following Apple's recommendation and use template images for UI artwork since Tower 2.0, updating the toolbar was relatively easy. Template images only provide the shape of an image as a vector-based format (PDF).
A template image is a streamlined, monochromatic image that can acquire different visual effects, such as selection highlighting and vibrancy. […] You want to make your template image as solid as possible (that is, with very little transparency or alpha values) so that it will look good when the system applies effects, such as the inactive appearance. Apple Human Interface Design Guidelines
While core actions such as pulling from or pushing to a remote repository or applying and saving stashes feature a more solid appearance, secondary icons such as showing a selected file in the finder or toggling the quick open window are made up of strokes.
The new navigation bar icons abandon the embossed visual style (Mavericks) and feature a lighter look instead — emphasizing outlines like predominant in the sidebar. Since space in this area is rather tight, buttons don't work in the area since adding them would also mean losing additional space to the button shape and necessary margins. Additionally, buttons also don't make much sense from a general UI perspective for the breadcrumb-style navigation bar items.
Sidebar
All sidebar icons are refreshed and reflect the updated Yosemite sidebar icon style.
The updated icons show clearer and more dominant outlines while relying on more subtle fill colors. Additionally, the icons were slightly simplified by removing unnecessary details.
Since we rely on additional 'visual effects' which are applied by AppKit, the blue color toning of the sidebar icons as seen on OS X Mavericks is gone. Sidebar icons now feature a translucent black & transparent look.
Colors
Overall, OS X 10.10 features a brighter color palette and less intense gradients. This change is visible in general UI elements and their use of lighter grey tones, but becomes even more apparent when looking at colored UI elements such as label colors, the new default folder icon color, freestanding toolbar icons or the default color for highlighted elements.
We've updated the colors towards a brighter scheme and took the update as an opportunity to make the scheme more consistent as well.
In order to keep track of various color values (and UI styles, too) we implemented our own, configurable global view defaults in Tower. By having a centralized approach towards managing the visual appearance of UI elements and graphics, updating and maintaining styles has become simpler. Additionally, it's also easier now to keep things consistent. The designer can jump into the appropriate files inside Xcode, quickly adjust and tweak UI styles and colors and compile Tower to see how the changes work out.
Button Styles
Before Yosemite, button styles provided by the system were rather limited, so we felt forced to create custom buttons. Over time, buttons used across different areas of the Tower UI diverged which lead to inconsistencies.
The latest AppKit offers a set of button styles which are better adapted to different scenarios. We got rid of custom button styles in favor of default system buttons with minor adjustments throughout the entire UI. We also make use of default sizes provided by the system. By doing so, all buttons now have a more consistent look and feel closer to the system.
Empty States and Progress States
Empty views, multiple selection views and progress views were overhauled. We took the same basic approach as we did for the sidebar icons, resulting in brighter (and lighter) fill colors while slightly emphasizing icon outlines.
Preferences Icons
All preferences icons were updated according to our new overall aesthetics: Brighter colors and less unimportant details which don't lead to a better understanding. We also changed our approach towards retina icons quite a bit. Until now, the retina versions of our preferences icons were simply doubled in size which also resulted in thicker outlines and details. The new icons maintain thin outline strokes which gives them a lighter and more 'elegant' feel on retina displays.
A word on App Compatibility
The new OS X UI brings quite a few changes to the look and feel of an app. Although the adaption rate of Yosemite is high and older OS X versions are on the decline, one still needs to consider the app appearance on older system versions.
New features like translucency and their support can simply be detected by making runtime checks about the system version but other visual updates need to be treated with more care. Especially button styles can feel out of place and need to be treated in a system-specific way.
The same basic principle applies to artwork: Some icons depend on the system look and thereby may look out of place on older systems. For example, in Tower we use a couple of icons which incorporate the system folder icon in one or another way. Since Yosemite uses a very different folder icon we make sure that icons which contain a folder preserve the old look on older systems.
In some cases it can become tricky to decide whether to treat certain aesthetics system-specifically or just go for a 'yosemitized' look on all system. Targeting specific OS versions might bloat the app and will make managing your app's aesthetics harder, so you need to draw a line and compromise at some point.
When in doubt, here's what Apple says:
Make it awesome on Yosemite, take advantage of new UI experience and stick with the system. Where possible, stick with standard controls, system colors, template images and system fonts. Freshen the UI, and when in doubt, favor the new visual style.
Conclusion
We hope that this article gave you a nice overview about the aesthetic changes Yosemite brings along and what this might imply for your app. While we are talking specifically about Tower, we do think that the philosophy behind the changes we covered are applicable to most applications that are transitioning to an adapted UI style for OS X Yosemite.
As a by-product of Tower's Yosemite update, we've created a little Yosemitization Checklist. It contains tips about what to keep in mind when designing an application for Mac OS 10.10.
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The Mac Silver Tower 4,1 and 5,1 remain one of the most powerful Macs ever made, depending on your processor. Even the eight core 2.26 GHz version is incredibly powerful and fast, outrunning any MacBook Pro and most iMacs, as will a hexacore 3.33 GHz or 3.46 GHz. Certainly they are more expandable, repairable and upgradeable than any other Mac built since, with SATA SSD and PCI cards and graphic card upgrades readily available and easily installed. For video editors, the Mac Pro Silver Tower is one of the best computers ever built.
In terms of cost for performance, no current Mac whether iMac or iMac Pro can touch the 4,1 and 5,1 Silver Towers. What's especially wonderful is that both of them will still run the latest Apple OS and software perfectly, with just a bit of preparation. I'll take you through the steps of a successful deployment of a 4,1 Silver Tower with High Sierra.
Start by Testing Your Hardware: Apple Hardware Test
The first thing you should do is test your hardware. This is easier said than done on older hardware. Apple has some lovely software called Apple Hardware Test a.k.a. as AHT. There's no joy in suffering through crashes which are hardware related, trying to debug your OS (software).
Normally you find AHT at this path /System/Library/CoreServices/.diagnostics
Unfortunately, recent versions of the OS have not included AHT or at least not for older computers. Happily some enterprising Apple fans have collected all the versions of AHT out there for all kinds of Apple computers including Powermac, Powerbook, iBook, iMac, MacMini, MacPro, MacBook and MacBooks Pro.
As we have mainly MacPros here from 4,1 generation, mostly upgraded to 5,1 firmware, we generally prefer the bundle which includes both 4,1 and 5,1 MacPros.
Installing AHT should be as easy as just as just copying the .diagnostics hidden folder over. Through OS X 10.10 that was all a user had to do to install a working AHT and then press D when restarting his or her Mac.
But since OS X 10.11 El Capitan, it's not that easy. To be able to install any files at all to the System folder, first you must disable System Integrity Protection. Apple and third party sites will try to scare you off of turning off SIP. Apple OS X users got by for fifteen years without SIP so it's not as big a deal as it sounds. Any malware clever enough to deploy on OS X will find a way to do so even with SIP turned on. SIP is just putting another lock on the door. Locks rarely stopped an expert burglar (he'll just go through a window).
Disabling SIP
Fortunately turning off SIP is easier than it looks. If you have a solid OS X 10.11, 10.12 or 10.13 installation you will have a recovery partition which can be accessed as simply as pressing command-R while rebooting before the grey boot screen comes up. This will take you to the recovery desktop which gives you access to a fully rooted Terminal app.
Inside Terminal, you can check SIP status by typing csrutil status. If you see System Integrity Protection status: enabled. just type csrutil disable. Terminal will print a message which says Reboot to disable System Integrity Protection. Isn't it great when command line commands say what they do and do what they say?
Graphic Card Limitations: Install a native Mac card for AHT and firmware updates
Since about 10.8.3, Apple OS X will allow you to install almost any AMD video card (i.e. Radeon 5770, 5870, 6850, 6870, 7850, 7870) and with Nvidia drivers you can use most modern Nvidia graphic cards (including the very popular GTX 7xx and 9xx series). These third party cards do not show the Mac boot screen however. You can probably turn SIP off without a boot screen card but you will not be able to use AHT without a native Mac graphic card. Make sure you have an Apple flashed AMD 5770 or 5870 or an Nvidia 120 handy before you proceed or you won't get far (there's a couple of firmware updates ahead). Even an old Apple Radeon 4870 will get the job done.
When you are finished the full install to High Sierra, you can put your high powered Windows graphic card back in your Mac Pro. With High Sierra, you have access to the AMD RX580 and RX Vega 56 with no system hacks on the red side.
For video editors: Nvidia's GTX 1070 and 1080 are equally available to you. For FCPX, AMD's RX580 is the much better choice. For Adobe CS and CC suites, Nvidia is slightly better. For Davinci Resolve 15 and up, both Nvidia (CUDA) and AMD (OpenCL engine) are good - the more powerful the card the better.
Making Hidden Files Visible to Finish the AHT Install
Now you should reboot normally with no modifier keys pressed. When you reach the desktop (probably after logging in), you should now either install a demo of Forklift (gives you a twin pane interface like the old Norton Commander on DOS and a GUI switch to hidden files) or make hidden files visible. This is an easy trip to the terminal. Type: defaults write com.apple.finder AppleShowAllFiles YES. After that you should press command-option-ESC and choose 'Finder'. You'll see a button to 'Restart'. When Finder restarts, hidden files will be visible.
Apparently in OS X Sierra (10.12) and later, Apple has exceptionally made life easier for power users by enabling this command: command-shift-. This does not work on El Capitan 10.11 (just tested).
At this point you can navigate down to the .diagnostics folder on your 022-5348-A.dmg disk image and copy it over to /System/Library/CoreServices/.diagnostics on your boot drive.
You are now ready to use Apple Hardware Test. Just restart one more time while holding down D on an Apple keyboard.
Keep in mind AHT does not work on Hackintoshes of any breed. AHT is just for testing Apple computers. In testing a half a dozen silver towers, I've found that sensor errors are most common. Depending on the sensor your silver tower will run just fine despite the invisible error.
On the other hand, video card sensor errors on the other hand will require you to run headless (quickly enable VNC and/or screen sharing in the 'Sharing' control panel while you have access to a shaky image. If you have no image, you could move that startup disk over to another mac and enable sharing on before rebooting with that startup disk on the troubled Mac. A headless silver tower makes a great remote file server to access from another Mac. If you have Gigabit ethernet (most wired routers these days are Gigabit capable), you'll be able to transfer files at up to 100 MB/sec which is faster than most spinning disks.
Installing the 5,1 Firmware Update
If you have a Mac Pro 5,1, you don't have to install a firmware update to be able to install High Sierra. To update a Mac 4,1 to High Sierra, you must upgrade its firmware to 5,1 to be able to install High Sierra.
Happily, you are halfway to the firmware upgrade though having already disabled SIP. Start by downloading the Mac Pro EFI Update directly from Apple and Hackintosh guru Netkas's Firmware Update Tool from his forum (first post).
Basically you make sure the disk image is mounted and then double click the Firmware Update Tool. After installing the firmware update, it's important to press the start button extra long when restarting until the power light starts blinking. You'll hear a long bong within 30 seconds and then you'll watch a grey screen where a firmware update installs along the bottom.
Which OS to Install: El Capitan, Sierra or High Sierra?
Now that you have a working and tested good silver tower, you could choose to install El Capitan, Sierra or High Sierra. El Capitan is the most reliable and solid of the recent Mac OS releases. From Sierra on, you should forget about any kind of Apple Soft Raid (old Apple Soft Raid arrays should continue to work but you'll have no tools to manage them). In these days of 2 TB SSD with read/write speeds in excess of 500 MB/sec there's little point to soft raid arrays. So for the sake of your data integrity and sanity, please remove any advanced disk configuration and go to a simpler layout following Apple's guidelines (large fast boot drive). It will cost you a few hundred dollars for the big SSD but Apple charges $1800 for 2 TB of internal SSD so enjoy the bargain.
If you choose High Sierra 10.3 there's one more essential step you have to take to enjoy (relatively) trouble free computing and that's to install High Sierra with APFS disabled. APFS is the new file system to replace the now twenty year old HFS+.
Why you would want to avoid APFS
While HFS+ has lots of issues, such as missing data checksums, nanosecond timestamps and concurrent access, HFS+ is twenty years old. The bugs have been worked out. No bugs is essential for a file system. It's not that I don't prefer APFS. It's that I will wait at least two full production years (probably three) before deploying APFS on critical data.
If you avoid both Apple Soft Raid arrays and APFS, High Sierra is not that much less stable than El Capitan.
Mailmate Eliminates Apple Mail as a Potential Spoiler
I suggest moving to High Sierra only having already moved from Apple Mail to Mailmate for email as my main driver (I live in email). I moved to Mailmate for the Markdown composition. I stay in Mailmate for the stability between OS X versions and the speed. If you are an ex-Eudora junkie or a serious email warrior (hundreds of mails read and dozens answered per day), I cannot recommend Mailmate highly enough. Serious Apple Mail users should reflect seriously on the issues introduced by Sierra and High Sierra before upgrading beyond El Capitan.
I also do not use any of the following software or services:
- iCloud
- iTunes
- Safari
The last one (Safari) is not quite true: I do use Safari as an auxiliary browser for some multimedia like Netflix for 1080p playback and even that not on silver towers but on a MBP 2011: Chromium and Opera are my work browsers. Not being dependent on Apple software or services allows me to choose my OS based on productivity and lack of bugs rather than on Apple's plans for me. The less often you must change your OS, the more productive you will be. Each change of OS and upgrade or reinstall comes with its own headaches, potentially whole days spent troubleshooting software conflicts and bugs.
The best step you can take to reduce your IT burden is to upgrade your Apple OS only every three versions (I went from 10.6.8 to 10.11.5, that's five versions and seven productive years with the same almost bug free OS).
How to Install High Sierra without APFS
APFS installs itself by default on any flash storage or SSD drive with any High Sierra install. You have no choice. Unfortunately the APFS conversion of drives can leave you locked out of your data, with no path back in. All users should have backups (make sure you do) before they do any upgrades and should be doing complete backups at least once/week. Should and do are often two separate concepts though.
Here's some real world experience:
I've used APFS for about 3 months, this is what I got:
1) Finder unable to correctly calculate and report empty space.
2) Slow boot when TRIM activated
3) Finder micro freeze
4) Bootcamp apps in Windows unable to selected APFS as next boot partition
5) Few APFS related KP (seems fixed in the later High Sierra)
6) No RAID / Fusion support
7) Causing About This Mac -> Storage very slow on getting the space analysis
Fortunately, the engineers inside Apple and senior executives don't want to test APFS on their primary computers either. So there's a back door to install High Sierra without APFS on flash media. A HFS+ install made with these flags appears to be safe against automated APFS conversion which has left many users without access to their data.
Here's how you do it. First download High Sierra to your Mac from the App Store (or copy the installer over to the Applications folder from another computer to avoid another download of the 5.3 GB file). Make sure the installer is in your Applications folder first.
First, you'll have to click the installer normally. You'll get a message that a firmware update is required before installing High Sierra.
Go ahead and follow the instructions for the firmware update. Your computer will restart normally after the firmware update.
This time, instead of clicking on the 'Install macOS High Sierra.app' icon, run a terminal command instead:
To install High Sierra to another volume, it would be this command:
I was not able to get the --volume directive to work so instead I fired up SuperDuper and copied my Sierra disk with the High Sierra installer over to a second SSD. I then restarted from the copied version (to be sure I had two working disks). With firmware fix applied, the first command to install High Sierra on the boot drive but without APFS worked perfectly.
Preparing Healthy Target OS Disks
You may have difficulty with your target install disk. Make sure that the partitions are healthy first. Your disk must be HFS+ Extended with a GUID partition. You do this by opening up Disk Utility and clicking First Aid from the window bar. If First Aid offers an error message, it's easier to fix the disk in either another Mac. Either way, open up terminal and run first: diskutility --verifyDisk disk2 (you can get the disk number from Disk Utility). If you get a failure message again, you should run diskutility --repairDisk disk2 (same number as above). Make sure you have the right number as you might end up erasing your disk. After repair, verify again. If that doesn't work, you'll have to erase the disk once or twice until you can finally run First Aid and verifyDisk with no errors.
Multimedia Applications on High Sierra
I've successfully run Final Cut Pro X 10.3.4 and 10.4.1 on High Sierra, as well as photo programs like Fast Raw Viewer, Iridient Developer. Basics like BBEdit and iAWriter work just fine. Simple music players like Clementine and Decibel work equally well. I've heard that there are some under the hood audio changes which affect pro audio programs so you must double check your key applications before upgrading if you are an advanced audio creator. Legacy Adobe users should know some issues with Adobe Creative Suite CS6 creep in after El Capitan (InDesign is the most troubled).
Viable Reasons to install High Sierra on production computers
FCPX
The reason I moved to High Sierra on my multimedia 12 core computer (I never run the latest release) is to enjoy the significantly better colour correction in FCPX 10.4.1. Sadly there are major bugs in the colour corrector in 10.4.0 which is the last FCPX which runs on Sierra. Apple's lack of courtesy to pro users inexplicable to me - Apple won't fix FCPX for Sierra. Forcing pro users onto the latest OS is deeply wrong, as pro users need complex programs which may not yet have stable versions available to run on the latest version of OS X.
My productivity computers still run 10.11 (El Capitan).
Software Testing and Latest iOS Support in Xcode
Tower Walls Mac Os X
In Foliovision, we are upgrading one of our support computers to High Sierra so that we can do testing on the latest Safari for our own video player.
Our main programmer Martin is considering upgrading to High Sierra as there are some good simulators for the latest iOS version in current Xcode. Martin tries to shift OS only ever couple of versions to avoid the inevitable downtime brought on by fighting upgrade bugs.
Tighter Integration with iDevices
This doesn't apply to most of us. We don't use the Apple services like iCloud (Jennifer Lawrence's very private photos along with the other victims of fappening was lesson enough to us that keeping our personal data on a platform which can be easily defeated via social engineering such as iCloud would just be foolishness). Our team in the marketing department disagree and love all of their MBP 13', iPhones from 5se to 7 Plus and their Apple services with nary a care for privacy and/or security. For some reason, they've collectively decided to distrust Facebook but trust Apple. Little Red Riding Hood still talks with wolves all these centuries later.
Tower Walls Mac Os Catalina
This group don't use advanced features or much shareware. They plug along with Apple pre-installed software (plus Affinity Photo/Affinity Designer) and mainly without multi-clipboards, text expanders and macros. If you are not an advanced user, you are probably not using most of the features Apple keeps breaking and you don't much care one way or another if features come and go to sell the latest OS. You've already moved on with whatever you are given. You probably never figured out the last set of advanced Apple features so you don't miss it when it disappears or radically changes.
In the post-Jobs epoch of annual OS upgrades and disappearing and dumbed down Apple software, most Apple users would be better served by finding third party software built by dedicated developers and staying on a single OS for three cycles (depends on quality of releases of course). The same applies to iOS. Far better to refuse those nagging updates and stay productive than keep running on what has become an endless update hamster wheel.
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Game breaker with Sierra and High Sierra: Advanced Networking
Networking doesn't really work properly any more. You can't allow screen sharing access or file sharing on a computer running High Sierra without disabling Apple's Firewall. Disabling the Firewall is a much, much worse security hole than not having SIP enabled. You do not want people outside your network to easily ping and access your Mac (most consumer routers are just detritus in the way of an experienced hacker).
Any computer which you want to work as a file server should not be running High Sierra. Think of Kodi or Plex for instance.
Tower Walls Mac Os 11
Revisiting the OS Choice
For a productivity computer, OS X 10.11 El Capitan is your best choice. There are the least number of issues with El Capitan of the three current OS. Almost all software still works with El Capitan. For most multimedia computers, I'd recommend OS X 10.11 (Davinci Resolve 14 users have official support for OS X 10.12 only but Resolve runs fine on 10.11, apart from HEVC encoding). Adobe CC users probably want to stay with El Capitan for now. If you just want HEVC for Resolve then Sierra would be your best choice as Resolve shows more bugs with High Sierra.
For a FCPX user, High Sierra should be preferred for the vastly improved colour correction. For a general user, if you must move beyond El Capitan, I recommend jumping straight to High Sierra just to save yourself the hassle of upgrading the OS twice within a year. At 10.13.5 with 10.14 Mojave already in public beta, High Sierra is relatively mature (if still buggy) and its inadequacies have been clearly charted.
Alec has been helping businesses succeed online since 2000. Alec is an SEM expert with a background in advertising, as a former Head of Television for Grey Moscow and Senior Television Producer for Bates, Saatchi and Saatchi Russia.
Tower Walls Mac OS