I was reluctant to post here.... because it's very hard to get a handle on right now. Harris got a lot, I mean a lot more snaps against Miami than he has previously, and he was all over the field making plays. He rotated in for Vilma even, for a couple snaps. His pass coverage has clearly improved, or Mangini would not have rotated him in so often, with the caveat that the Dolphins were clearly doing their best to establish Brown as a workhorse RB in that game. Harris is still probably better against a team trying to establish a running attack the way Miami was, but as Smizzy said, he looks like the real deal for future stud-dom.
There have been some very unsubstantiated rumors about the Jets trading Vilma once Harris is ready.... pure rumor mill stuff, but it might have legs as Vilma's effectiveness as a 3-4 ILB have not panned out all that well either. If I were doing a dynasty daft righ now, and had to take a Jet LB.... I'd take Harris, although should Vilma ever get traded to a team with a 4-3 D, he could be a top 5 LB again.