New 100-400L IS II?

I did some tests with my 70-200mm f2.8II and 2x as well with the same results. I am very happy with the 70-200mm f2.8 isII bare or ith the 1.4xII, but it is no match for my 100-400mm L when the 2xIII is used, especially with the 7D. OK, but not good enough to want to sell the 100-400mm. IMO : )