360. 
i held out as long as i could guy, and as much as it pains me to say it, the future of gaming is all about the consoles.
<--former q3/cpma/rtcw/etc etc etc you know?
MMORPG and FPS will keep PC afloat for many years to come.
LOL. PC gaming is on life support as it is, without WoW the coffin would already be 6ft under. Even iD knew this two years ago when they announced that RtCW 2 is going to launch on what? The 360.
If I'm a game developer or publisher, which direction do you think i'm going to develop to? Towards the few holdouts who still play PC FPS, or the billions of 360/PS3 consoles that can be found in every teenage kid's living room?
The 360/PS3 consoles provide a stable gaming platform that developers can build around without worrying about compatibility issues, or having to develop their game to run on oldest of systems, instead of building their games and having to ensure that it will run on the handful of pc's running 1gb ram instead of 2, or 4, they can build it to run on one platform and know it will play exactly how they want it to for every copy sold.