What xbox360 should I get next?

I want a new xbox360 game but I dont know what to get.I already have gta4,gears of war,call of duty4,oblivion,halo3,sonic the hedgehog,tony hawk's project8,and madden07.I like all types of games.

Mass Effect.

Great RPG.

Which one is better guitar hero or rock band?ironbat25

Rock Band: $180.

Guitar Hero: $60 brand new on eBay. LOL

But if you've got the money, you can probably squeeze more out of Rock Band than GH3.

[QUOTE="ironbat25"]Which one is better guitar hero or rock band?Making_Pudding

Rock Band: $180.

Guitar Hero: $60 brand new on eBay. LOL

But if you've got the money, you can probably squeeze more out of Rock Band than GH3.

Guitar Hero: 60 $

Time spent freaking the **** out on Guitar Hero III: priceless