I would have to think Cinci. They have been prettymuch the only team you could blindly bet against and make money. They have been favored in very game this year, and this is their second time as a road favorite.
Their quick start has more than likely gotten people thinking they are decent, so they are definately gettin gover valued IMO.
I am a big Carson Palmer guy, but certain franchises just have the stink of failure around them. Sooner or later the bottom will fall out.