So, I guess I'm what you'd call a "prosumer." I have a lot of experience with cameras (I know how to use one beyond "point and shoot"), and I even dabble in wedding photography from time to time (I'm a backup for some friends who have their own photography company). I've been using the Rebel line of digital cameras for a while now, currently on a T1i. I've been happy with it overall, but in comparing it to my friends' pro-grade equipment (e.g. the 1DX), it's obviously lacking in a few areas. I want to upgrade, however I'm not ready to spend that kind of money, nor could I justify it. I've been thinking about the 7D. I realize the 1.6X multiplier will still be there, but I'm wondering...how's everything else in comparison to the pro-grade cameras as well as the beginner-cameras? One thing I notice when I use my friends' pro-grade cameras is how lightning-fast the focus is, and how super-bright the viewfinder is. Also, light-metering seems to be much more spot on. So I guess what I'm asking is, anyone here upgraded from the Rebel line to the 7D (or something in that range), and what are the biggest improvements you notice? Is it worth the move, or, not significant enough?