get both, X-box 360 currently offer a larger library of games since it was launch a year ahead of PS3, but PS3 current library in High Definition is slowly building up in anticipation of its killer titles like Metal Gear Solid:4, Grand Turismo HD, etc.

Agree with Mambo dude both consoles have pros and cons, so depends on what type of games you would like to play on your long term investment.