I've had many of the XXd models from the 20d to the 50d (and all in between), along with several rebels and an original 5d. I now have a 7d and love it. The thing I don't get is why everyone is so stuck on plastic bodies. I didn't ever have an issue with the rebels because they were plastic, my main issue was that they were too small and made my fingers feel like they were cramping up after shooting for a bit. The plastic body itself proved to be very durable and possibly more so than the Magnesium bodies.
As someone who works as a professional photographer, I have taken all these cameras to the extremes with occasional reckless abandon. My rebels hit the concrete from 3-4 feet off the ground a couple times, never affecting them at all. The only one I ever had issue with happened to have the door come open during the fall and break off. Last I checked, the doors on the metal bodies are also the same material and logically would have also broken off, possibly bending the body at the same time.
The 40d and 50d in my personal experience were the worst of the xxd cameras produced and if the 60d is anything like the 7d, it will be a great camera. So much has changed, for better or worse, that it won't be a minor adjustment to the 50d, but rather a complete reset for the lineage. IMHO, the xxd line needed just that kind of reset. With the 7d and 60d, there are now more options at more price points. I'd love to see a similar approach taken to the 5d with a plastic bodied full frame similar to the 60d priced maybe around the same as a 7d. As long as the bodies don't shrink, I'm not going to complain about the plastic. With the rubber grips/pads on, I don't suspect you'll even be able to tell much difference.
