Upload & Sell: On
Well, in my case for cost reasons I am limited to one, "do it all" body. My kids have graduated high school, so I'm not shooting sports (hockey and volleyball in my case) anymore. Still, from time to time, I will go to an airshow or do some BIF in addition to vacations, landscapes, street and family events.
In my hands, at least, the 40D's AF was never more than ok for hockey (or for BIF, airshows or anything else in motion for that matter) but the decent frame rate made it a good compromise camera and I always found the IQ to be acceptable, even at the absolute max ISO (3200).
Given my needs now, I'd happily trade off a couple of FPS for more accurate AF with respect to moving things, genuinely useable high ISO (3200+) capability and better IQ. If the 6D can handle moving objects passably well, then it might be the camera for me. If not, then I guess I'm hoping for the 7dII.