One last software topic before I stop beating this dead horse, I promise. How do you get the best gaming experience on Linux or Mac? Run Windows 8 games in Wine (on Linux) or in Parallels or Boot Camp (on Mac). 'Nuff said.
Steam on Linux is intriguing, but it's still in the bush leagues when it comes to game support. As for Google's operating system, my one wish is that someday, somehow, I'll be able to play Bioshock Infinite on the otherwise glorious Chromebook Pixel.