i've never had a camera with that feature, but I really wish my current one (40D) had it. It's a valuable feature, but not a deal-breaker.

I would never get a 7D over a 40/50/60D camera: lack of built-in flash ("speedlight") is the issue. The danged thing is simply to useful to be without. Yes, I have a very good external speedlight, but it's not always with the camera.

Still.. full-frame is very tempting.

Cheers