PC BY FAR!!! pc's are so much better than macs....cmon...they have mice with two buttons. although one + for macs is that there are less viruses for it.
I personally like the Mac OS over Windows, but both are made to do different tasks. So the best would be PC and Mac together. Then you're getting the best of both worlds.
There are a lot of games for MAC. But there are two problems! The first is, that these games are more expensive and the second is, that it is harder to get them. For example: I live in Hungary(It's a country in middle-Europe) and if someone here want to buy a game for MAC, than he/she needs to order it from the U.S. or maybe there are some shops(I don't really know...)in the U.K. or in Germany.
PC is better in a lot of things and PC is not for only gaming. It's easier to upgrade and use.
I think PCs are much better because of their compatability with all games made for a computer system (resembeling computer shape) because there aren't many games for mac but a PC has lots of word programes like windows word