If you were only chosing one, which game would you get. And don;t go by the reviews, because if I were going by the reviews I would have never bought crackdown or madden, which I loved. So which is better. And I was also wondering, how much re-playability is their for Assassin's Creed.

Oh, and I was woundering if there is any online/co-op for either of these games.