When they first released, I would have said PS2 hands down, mainly because of the game selection and the fact that PS1 was out first (more consumer trust).However, now that they have been out for a while and we have had a chance to use both and the game selection is higher I would have to say X-Box: better Graphics, X-box-live, the Big Controller (yes, I actually like them--it alows people to buy a smaller size if they would like, but for people like me with gigantic hands it's nice to have a larger controller for once), and of course Halo/Halo2 always helps.