I'm really not that sure about GoW2, I mean the original was pretty poor - sure it had some great graphics and original (at the time) mechanics, but the [largely non-existent] story was terrible and to be honest one of the things I value most in a game is the story.
I probably won't be getting Gears of War 2 on the day of release as there's a bunch of other great games I'd rather get (Fallout 3, Far Cry 2, Fable 2) although I probably will end up getting it because of Xbox Live peer pressure (if all my mates are playing it online I'm gonna feel awfully left out)
/ 
