I've got McNabb in one dynasty league, and Kolb in another, so I definitely have an eye on this situation. One thing I haven't seen mentioned in this thread is how likely it is that McNabb will miss at least one start with injury. If the last three years are any guide, he'll miss around five starts. In addition, McNabb's backups have tended for whatever reason to shine, and the team has often done as well or better than McNabb with them starting, at least in terms of W-L. Those backups, however, have been guys like Detmer, Feely and Garcia, people who would never be a threat to replace McNabb as the starter. You have to wonder whether that kind of a window of opportunity for a guy like Kolb, drafted to ultimately replace McNabb, will be a springboard for Kolb to be the starter entering 2009, especially if Kolb is the one who late in the season gets some key wins for that team in a playoff run as has happened so many times before in Philly.