Going off of the prices at Pinny, I think the Eagles probably have the best value at +566 to win the NFC since they will only be legitimate underdogs on the road vs New Orleans. Second best value is New Orleans, followed by Dallas.
I just don't think that their defense can get it done against the saints offense. Philly has beaten Carolina, Washington, Dallas, New York and Atlanta in their winning streak, and the defense gave up points in all of them. Throw in that there has to be a letdown game for them somewhere, and I don't see them winning three straight (likely with two on the road).
While I'm not ready to be a complete homer and put the saints in the super bowl, I do believe that the second round game in the Superdome will be the defacto NFC championship since whichever team wins that game will either have a good shot at going to Chicago and winning or will be hosting the NFC championship game themselves.
In the AFC, I like Baltimore over New England in the AFC championship game. Belichick stymies Rivers and outcoaches Marty but simply doesn't have the horses to beat the Baltimore defense.