It all depends on the types of games you want to play. If you're primarily concerned with FPS type games, then computer is the way to go. Good console FPS's are few and far between, but a dime a dozen on pc. RTS is pretty much the same, pc gets the nudge. RPG has strong contenders on both console and pc. PC's tend to get more of the MMO style rpgs, as well as the "Baldur's Gate" style rpgs, consoles tend to get the more action oriented rpgs, such as Final Fantsy, Dragon Warrior, and Knights of the Old Republic... action oriented, but definitely not lacking in story. Platformers (aka Super Mario Bros. style games), hands down, console. Keyboard/Mouse just don't work so well with platformer games... though I guess you could get a control pad. Racing games, again, either system will work. They all tend to be developed for both pc and console (except for a select few), and generally run the same on both.
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