I would personally recommend buying it for the xbox 360 over the PS3. While the game itself will be identical on both systems, the PS3 version suffered from more bugs and longer load times. Minor problems, but annoyances nonetheless.
If you havent gotten this yet... hopefully you gotten the 360 version. I had both and my ps3 version was doing great, just like my 360, but after 2 months not playing my ps3 version and putting it back in, it was buggy, well buggier.