I've had both, got rid of the PS2 because the X-box is better.
Also, keep in mind that there are people currently working to produce advanced mod's for the X-box. Similar to the mod chip in a PS, the mod chip they are trying to develop would allow for different types of gameplay. They talked about being able to play PS2 games on the Xbox with the new mod chip as well. It makes sense, since it is the same gaming system, only with better performance - therefore it is possible. They also mentioned emulators being made, so you can play old games as well.
Anyways, this is probably a little far fetched from now. But, in no time I'm sure the mod chip will be ready. If you don't think X-box is better then PS2 now, you will once it is released.
