If you have patience wait for the next generation to come out. PS3 and Xbox2 should be coming out in 2005.
If not, then read my breakdown of the following systems
Xbox
Pros
Halo
Online Gaming Aspect Strong
Output supported to larger resolution TVs(including HDTV)
Up to 4 players on 1 system
Cons
Not Enough good Games(Halo and Sports Games aren't enough)

PS2
Pros
Many, Many Games
Many, Many good games
Cons
Weakest Graphics output
not really good for large TVs
Weak Online Aspect

GameCube
Best for younger Kids
Games Tailored for younger generation
Pretty good graphics
Some cool GCube only games
Cheapest(100$)
Cons
Weak Online Aspect

All three of these systems are getting older and once Xbox2 and PS3 come out, companies will no longer produce games for these consoles.





Once You Pop You Can't Stop