i would defenatly take the xbox version.
there are some really good graphics changes compared with the ps2 version.
the car damage engine is really good aswell. the rain graphics have been changed a the raindrops physics are really nice aswell
xbox is the most powerfull console out there and it has some really nice fetures
that why i like it.
Ps2 is good in some way's its just that graphics on some ps2 games look a bitt dated