I love 8.1 because it is fast and great because I have a touch screen, if you are going for a non-touch computer, go with 7, because it would be easier to navigate. Also, many gamers have said that the windows button on windows 8/8.1 is annoying because it will bring them out of their games: there is an easy fix to it (there are multiple ways of disabling the windows key), but it should still be considered.