I'm a little surprised by some of the comments in the thread, such as "the auto-focus system is too complex". I for one, think the choices for auto-focus on the 7D are outstanding. There are many ways to configure it for what works best for you...given the particular situation. I haven't had much time to play with my 7D yet, but so far, it's been nothing short of outstanding.
Thats the kind of comments I want to hear, as I really want a 7D in the new year!