I just picked mine up from work today and I have to say it is very cool. Graphics are amazing and it's a lot of fun so far. I don't know how deep the game is but I am sure I will enjoy it for at least the short term. COD4 has more longevity most likely.
I will say though, if you don't have a friend who has the game then I don't suggest it. If you need someone though, I'm available after work.
