I'm caught between 360 and PC for Fallout 3. I'm sure the PC version will look nicer and will allow mods, but then I lose the fun of playing it on my home theater.
But I canceled all of my game preorders. I was going to get Fable II, Gears of War 2, LittleBigPlanet, and Fallout 3, but then the EP800 was announced, and I had to start cutting away at my other spending. So see, even if you don't get your EP800 right away, at least you get to enjoy all of these games I want while I gnash my teeth and wail through my layaway nightmare.