I love my 7D and have no intention of parting with it. My thinking is this: my T3i sits in the bag and never gets any use. If I make the move to the 5DII or 6D, I will still have 2 bodies with a nice assortment of lenses for both. Plus, I will use both cameras for their respective assignments. I will have 2 outstanding choices for every shoot, as opposed to just keeping the T3i as a backup. The FF would be my primary for portraits and the 7D for landscape, wildlife, sports.