Regarding Midnight Club, I bought it the other week, and I'm enjoying it quite a lot. A lot better than NFS anyway

GTTboost, I own both a PS3 and an Xbox 360, and games wise, they are the same basically, however in my eyes, the PS3 excels in that it has a blu-ray player (which is a major positive imo, because once you go HD, you'll never want to go back

), and you don't have to pay for online gaming.
Go for a PS3 if you want better future-proofing.