I bought an xbox 360 for a few reasons
1) games and game selection currently has the biggest and the best library in mu opinion, though I like shooters, racers and open sandbox games which xbox excels in
2) The controller most comfertable and best again in my opinion
3) I like the underdog funny but MS is the underdog in consoles
4) Online play once you expereince live you undertstand why MP is so bog these days
You wont go wrong with either one
PS3, WII and 360 all great systems depends on what type of console player you are.
Currently playing Call of Duty Modern Warfare 2, Fallout 3, Halo ODST and Dragon Age Origins is next game
Xbox live:mywiferocks