Upload & Sell: Off
I used the 7D through Dec. 2012. Then I purchased a 6D. "High ISO - Low Light" photography is one of my common shooting environments. When I saw what the 6D could do, I immediately disposed of my 7D, my 5DMKII and my 60D. I then purchased a 5DIII. With the 6D and the 5dMKIII, I am in 'High ISO heaven.'
Yes the 7D has its strong points, but for those of us who thrive on High ISO, it does not hold a candle (no pun intended) the 6D or 5D3.
Just out of curiosity, why would you keep the 6D after you got the 5DIII? Unless you are a pro and need a backp body, it seems a bit redundant.