I wouldn't know because I dont a any XBOX related thing....
(Money sucks right now T-T )
So I would say PS3 just because I have one.
But XBOX would probably be the better choice :/ .
So choose between being able and not being able to wifi with me :3 lol .
If you enjoy JRPGs (Japanese Roleplaying Games), then get PS3 because it has an abundance of JRPGs. If you also enjoy PS3 exclusives such as God of War, Little Big Planet, MAG, and MGS4, than get PS3.
If you like WRPGs and First Person Shooters, than get an Xbox. You have to take into account that you might get the RROD, but if you enjoy Xbox games than it's worth the risk. Halo 3, Fable II, Gears of War II, and Mass Effect are great Xbox exclusives that you should consider when buying.