Xbox 360.
-More exclusive games
-More Games total
-More Online games
-More downloadable content
-Comes with a 3 year warrenty
-Has more games coming out in 2008 and 2007
-Has the most and biggest budget titles coming out this holiday then any other time in videogame history.
The ps3 does have free online, but almost no games to play online with. The PS3 will be worth the cash Mid-2008 when it has some good games out, but right now it has jack fucking shit, with a few good games coming out before X-mas. However there holiday lineup is nothing in comparisons to 360's.
Xbox 360 hands down no questions right now. Go ask on a video game message board.
www.1up.com,
www.gamespot.com,
www.gamefaq.com etc..
you should get a majority of the same response I gave.