Windows because it's impossible to suck. Mac is restricted to like five different computers and all of the specs suck except for the Mac Pro which is $10,000 or something. With Windows you can tailor your PC to whatever you'd like and almost all of them even the laptops can have parts changed. Windows have 1000's of different computers running on their operating system to choose from. Chances are if you buy a Windowa computer for the same price a good Mac one is you'll get a pretty damn good computer.