HighSnobility wrote in post #11004939
I think it will take some time to get used to focus and recomposing wide open at 1.2 / 1.4 etc. All I have ever known is to select an AF point on the 7D and fire away with little focus / recompose so that will take some practice.
What's funny is it's the complete opposite for me. I find full frame a lot easier to compose with. Maybe not with the focusing when comparing these two specific cameras, but with the framing and DOF for sure. And I'm sure you'll find that your 70-200 has just become much more useful 
Then again, I'm having second thoughts, and might just cancel the order while I still can and pick up a 7D again. There's no way the 5Dii isn't getting a refresh soon. For one, the 5Dii's age is getting very close to that of what the 5D's was when it was refreshed, and two, they've gotta do something to beat Nikon's D700 (which has a very nice AF system on a FF sensor for the same price). At first you might think that this would cut into the 1Ds's sales, but that body's already 3 years old and is due for an upgrade as well. So my guess is that they're planning on making the 5Diii a full frame 7D (give or take a bit), and upgrading the 1Ds with some new features, all in one fell swoop.
Then by the time I go to sell the camera to fund the upgrade, the 7D would have depreciated a lot less than the 5Dii.