Bungie Studios (the company that makes Halo) left Microsoft. The next game it makes will be available for all 3 systems. Also, many companies are mad at Microsoft because they cant put as much as they want into there disk it only holds 8 gigs. For an extra 20 dollars you can get the PS3 which has blu-ray, web surfing, free internet, Sixaxis motion control, uses 264 MB Ram on graphics compared to Xbox which uses 16. Dont get it for just one game
EDIT: PS3 has
Uncharted Drakes Fortune (like it more than Assasins Creed)
Assasins Creed
Call of Duty 4
Lair
Heavenly Sword
Guitar Hero
Rock Band
Most of the games Xbox has but with better graphics. The game GTA4 will come out on multiple disk for Xbox because it cant fit enough into that small 8 gig.
EDIT TO JOE: Yes gamestations crash if the gamestations are XBox with its 33% failure rate compared to the Ps3s 0.03% failure rate. Bluray is not only for movies but also for games. You can fit more into a bluray than a regular disk. a bluray disk holds 50 gigs. And for Xbox anything you buy has to be from Microsoft. In a PS3 you can buy from whenever. You can even upgrade you Gigs by yourself without ruining the warranty. You have to send it to Microsoft for a Xbox