Should i get an xbox 360 or a ps3?

If more of your friends have xbox then get xbox because it's more fun experiencing online play with friends rather than with just random people. Ps3 is nice because it's free internet and maybe better graphics... But those are the only pros that I can come up with for the ps3. The xbox also has left 4 dead which is a great zombie based game. It has Halo 3 and it has Modern Warfare 2 which is the best game so I would say xbox.