Picking a console depends what you want more games or services.
Xbox 360 has alot more entertainment services for TV shows and movies,
but barely any exclusive games.
The only good exclusive games on Xbox is Gears of War and Halo.
Also it has Kinect which makes the Xbox 360, 2 Consoles in 1.
Playstation 3 has very Few entertainment services, but a ton amazing exclusives.
inFamous 1-2 , Uncharted 1-3, LBP 1-2, MGS4, R&C, PAS:BR, Dust 514, Journey, Modnation Racers,Heavy Rain, God of War 3, The Last Of Us, Beyond Two Souls, Agent, Gran Turismo 5, Heavenly Sword, Killzone 2-3, The Last Guardian, MAG, Motorstorm, Resistance 1-3 Sly Cooper TIT, Socom, Warhawk, Starhawk.
Also, PS3 has PS Move which also makes it 2 Consoles in 1.