I really like both of my systems. I would recomment the PS3 because of its game selection. It has LBP, KZ2, Resistance 2, and it will be getting GOW4 and MAG, among others. Also it has Blu-Ray.

The only 360 games that I play are Rock Band and Guitar Hero, and i might get Gears 2. Other than that, i dont know of any console-defining games that are coming out.