I'd try to snag Kafka if you have the chance and it doesn't cost you much. I've seen him play in preseason games (I'm a Birds fan.) and I won't say he's gonna be the next Peyton or anything, but if Vick goes down, he'll put up decent numbers. That said, I love Mallet's situation and would definitely prefer to draft him. He's under BB, can study a master like Brady, and can watch a fun offense to learn to QB. I'd hope the attitude problems can be ironed out by a tough coach like Belichick and that he can develop and eventually take over for the Pats or have a Hasselbeck type trade. One would hope you'd have a Rodgers situation on your, and I've been stashing him in dynasties in hopes that that is the case.
Grab Mallet, roll with that. Good luck.