I guess I'll derail the thread a tad further by asking a question about Windows 10: why?
In other words, besides DirectX 12 which is apparently a significant improvement that will start being exploited by games in the future, why would I want Windows 10? Ignoring the obvious privacy and marketing issues, what exactly does it add that I don't get in Windows 7 or even Windows XP? My wifes laptop is, by necessity, Windows 8.1 and it does nothing but annoy us. There is nothing there that is "better" and a lot that is worse. It took us forever just to figure out how to turn the thing off and neither of us appreciated the constantly updating "advertisements" (i.e. tiles) on the start screen. Sure, I can (and did) disable those, but how is "you can remove the added stuff" an improvement over not having the stuff in the first place? The only thing I have found marginally better is Task Manager, while we have run into a lot of bugs, like important dialog windows popping up underneath the active window, making them invisible. Plus it often takes multiple tries to get the stupid Charms to show up so we can shut off the computer. (To those that say "just push the power button stupid" please note that it defaults to having the computer sleep not turn off. And yes, I know how to change that too but what sense is there to a new operating system if you have to make a bunch of changes to get it back to the way the old OS worked yet gain nothing new that is usable?)
So those of you that are Windows 10 boosters: what new features do you enjoy or which enhance your tasks or gaming?