i hope i'm not to late for the orignal poster, but DON"T BUY THE GAME ON PS3 if you got a 360!
I started out on PS3 ( i have the DS version as well). For single player, this game is almost identical except that 360 has acheivements. But the PS3 editon's multiplayer is waaaaaaaaaaay more buggy than the 360's version. I played for 2 months stricly single player, than about 3 months online on PS3, and it got to the point where PS3 multiplayer was unplayable. Half of my games on PS3 ended in freezes, the leaderboard has a lot of problems, on 360 there are some, but not near as much as PS3, the PS3 leaderboard is a joke.
It's a lot harder to find matchups on PS3, whereas 360 seems a lot quicker. there are almost no team games on PS3, while 360's team games seems almost more popular than H2H. I've finished more games online on 360 in one month than I have been able to on Ps3 in three months.
There are still some bugs and occasional freezes on 360, but nothing like the nightmare you will expierence on PS3. Ps3 does have good days and bad days, but 360 is not even close to how awful the Gamespy servers make this game on PS3.
I'm no noob, and I don't have a bad internet connection either. I'm probably the only player in the world that has been top 10 on both systems, so I've put in my time. Save yourself some sanity, buy the 360 version. This goes for current PS3 users as well. If you're fed up with the constant problems of PS3/Gamespy and you own a 360, it's worth every penny to go ahead and spend the 40 bucks to get it on 360, that is if you are like me and are addicted to the game and have been for months now. I've played almost every night for the past 6 months, and those 40 bucks that I spent to get it on the 360 was money well spent.