Future injuries might make decisions on Campbell/LaPorta/Gibbs/Branch easier. Of the four -- and barring injuries -- I think Campbell is a lock to be resigned followed by Gibbs. I agree that extending RBs is a dicey proposition, but Gibbs is special and still very young. If he's healthy and you can lock him up through age 29/30, I'd make the exception for him. Of LaPorta and Branch, I think LaPorta is the easier of the two to replace, as Branch can play pretty much any DB position and be adequate at worst, and elite at best.