The more I think about it, I'd go with Miller. He's better suited to play OLB as a rookie because he already has the experience. There's not much of a transition for him. He'll just be learning the defense, not a new position. His transition will be mostly mental.
I feel that Miller is going to resemble Dumervil. Sure, they're built differently and are very different as prospects, but they have a nearly identical style of play. Dumervil is an outstanding pass rusher, but he's gives up some against the run. Prior to switching to the 3-4, Denver only used him on passing downs because of this. They felt that they couldn't afford to leave him on the field all game because their run defense was too weak.
With Miller, I think he'll wreak havok against in the backfield and add a lot to our pass defense. He will, however, weaken our rush defense. My feeling is that since we are strong against the run, we should go with the player that is going to solve our biggest weakness, our pass rush. That's Miller.
Also, the fact that Quinn sat out a year doesn't help his case. If he shows up to the Combine in great shape and shows some of that ridiculously-rumored speed, he'll be the talk of the draft. Really, you don't what you're going to get from Quinn until the workouts begin. As of today, Miller is the better pick.
[ Edited by strickac on Feb 3, 2011 at 07:09:29 ]