The PS3 controller is based on a perfect controller which had proven itself for years and years already...

The only reason i would prefer the 360 controller is because of it's weight (I find the ps3 controller a little light, especially when playing PS3 after two weeks of non-stop Fable II) and the PS-button is not so well placed, or at least not well mapped... confusion galore with non experienced players who need to hit start and the most obvious start button is the big round one in the middle... makes sense right?