I just purchased a refurbished 7D, having owned a T2i since last Christmas. My rationale for upgrading was mostly for the brighter viewfinder, microadjustment, and generally better ergonomics (rear wheel, one-button RAW, etc.) that the 7D offered. I didn't have any expectations of better IQ.
I've only played with the 7D for a few hours, but a couple of things struck me straight-away that I hadn't anticipated. First, I was surprised that the 7D doesn't have the nifty feature where the LCD blacks out when you bring the camera to your eye. Secondly, the LCD screen graphics aren't quite as crisp or "stylish" as they are on the T2i, which I'm sure must be due to the slightly lower resolution of the 7D screen. Also, I always had my T2i LCD set to the "black text on light gray background" style, but I was surprised to find that the 7D doesn't provide different LCD styles.
None of these items are more than cosmetic, and the positives of the 7D more than make up for these minor quibbles. Just thought I'd offer them as talking points for T2i owners who might be considering a 7D. And for you T2i owners out there, rest assured that you've got a heckuva worthy camera.



