I'd go POTC as well. It's a game I keep going back too. When released something really new and innovative. I sell it but miss it. Up to 3 now. I really should keep this one.
BDK just because it moves, especially hard second time around...man that thing is quick.
MM as others have said it just keeps giving something new with each hit.
Would be great to see something truly unique again. Lately everything seems the same.