I'd like to agree with Nittany's take on the prediction. (not biased, I swear
Philly did take care of their major areas of concern with Owens, Dhani Jones, and Kearse. A few more additions for depth and they've sorted out their weaknesses.
Miami also took care of their weaknesses, however, they always seem to have great offseasons. However, fate seems stacked against them. Going 10-6 and not making the playoff stings, really a shame that their coach takes so much heat for not making the playoffs when the team's record is so good under him.
The main problem for Miami I think is that the Pats have gotten better as well. With a new strong running game to likely take form in NE, expect Law's replacement and several other starter quality draft picks to fill the ranks and ease the team into a playoff spot.
Colts are always a solid prediction, especially as their defense improves. This may be their last realistic shot at the Superbowl as it may not be feasible to retain Harrison's services after this year.