After much agonizing about the state of Apple's dedication in supporting power users, I decided to replace my Mac Pros at home and work with beefy Windows desktops (my laptop is still a MacBook Pro). At work, I now have a Falcon Northwest Talon (6-core), and at home, a custom 10-core workstation built by my good friends at Central Computers. Most of the main apps I use for photography and videography work are cross-platform and run much faster in Windows, and my recent work in 360/VR leans heavily on CUDA-enabled GPUs (which no modern Mac has, since they rely on ATI graphics cards). This made the decision really easy. When I'm working in-app, I barely notice the difference in operating system. I do miss all the little things about Macs, though, including a bunch of shortcuts and utilities that make working on a computer easier, and also, the Ux standards that most Mac developers adhere to. In Windows, it's a mess, and many apps are so ugly I can barely stand to look at them.
Above: this flashing light apparently means that my computer is sleeping
The pain of inelegance has so far been worth the switch. Aside from esoteric stitching and rendering software, most of my media work happens in apps like Adobe Photoshop Lightroom, Premiere Pro, and After Effects. These work well, and running Lightroom in Windows (library on SSD) with all of my media files on a NAS box is much faster than running Lightroom on a Mac Pro with local media files. CUDA-based render operations are an order of magnitude faster, taking minutes instead of hours.
As I find Windows apps and utilities to replace the ones I use frequently on my Mac, I'll write here under the tag, #mactowindows.