I've been shooting with the 7d for about a year and a half now. The bulk of what I shoot is sports, and for the most part it has been pretty good, but as I have improved my skills I have become more critical of everything.
I have been annoyed with a couple of things with the 7d
Quite frequently I find it drops fps dramatically to about 3-4 fps when I have the af priority custom function on. I find that if choose another custom function I will have crap load of out of focus shots. It is quite annoying when I miss those decisive moments.
Also I have a question about the ai servo expansion with the 4 pts. I have the custom function set where enables me to see the pts that the camera chooses in the expansion mode during ai servo. However, when I have been shooting wrestling and basketball this season I have never seen the camera go to these outer points. Has anyone else encountered this.
For some the 7d is great but now that I am alot more advanced in my photography I really want to use gear that I like to use. Right now I am considering either the 1d mark IIn (which I had the pleasure of using for a week) or 1d mark III as the fps drop are really killing me.