I tend to favor the Playstation series. I owned almost every Nintendo system, then saw what the original Playstation could do, that one system seemed to be more user friendly and much more capable in terms of playability and the wide selection of games that are available.
The XBOX to me was just another thing for Microsoft to get money off of because at around that time their piracy rates went way up, and now it's even higher, so go figure an XBOX 360 comes out. Although the machine is vastly capable, I don't think it could ever do what the N64 or PSX did, which was establish the way you played games, for instance the use of an analog and D-Pad, the use of a memory card to store a vast amount of games, the ability to use a CD or a catridge that could hol dmore data and support better graphics.
The Playstation 3 will no doubt be the next console I purchase. It to me seems liek the better deal...