So far I am very satisfied. I had, of course, first of all switch from familiar settings of the 50D away toward where the 7D. Meanwhile, I have been photographing almost exclusively with TV, time is often a limiting factor in moving subjects as me this is the most secure program.
In general, try to lower ISO - areas to stay, to my mind rushes the 7D over ISO 800 but more violent.
From the feel of her she is perfect, especially with battery grip also in the vertical area.
I prefer RAW for shots and go with it very well. To date, I mostly use the car - AF and therefore make good experience, well I think but the possibility also select the AF Messfeldfer. Also useful is a choice of 3 types of autofocus depending on the situation.
The bright display convinced me wholeheartedly.
Since I manage always to produce "crooked" horizons, the switching in of the grid lines is extremely helpful for me.
The sequence mode is much faster than the 50D, which greatly helps in the field of wildlife photography.
By opting for the Canon EOS 7D I'm very happy, it provides the speed for wildlife photography as well as the robustness of the housing for outdoor use.
Paired with one of Canon EF L lenses an almost perfect solution. Whether there are quite perfect, I do not know.