I chose Xbox and couldn't be happier. To me, the limitations that the PS2 has (basically I can't stand to look at sh1t textures, and I want an online gaming setup that will rock, not one that is unorganized and going to cost me and probably have only a few titles that support it).
I'm very VERY happy with the Xbox. Games liked Amped, Halo, PGR and DOA3 just kick @ss, and of course I have the best version of Madden football, which is important to me.