And why please?
I am doing a lot of event / concert shooting and I saw an article in Popular Photography mag. [May or June] that indicated the 20D focuses quicker and more accurately than the 20D, especially in low light as well as noticeably less noise at 1600 [not that the XT is bad].
Wonder for those that have switched from XT to 20D whether they found this to be true and otherwise, consider the 20D worth the price difference.
) But as for the lenses, The biggest one I have right now is the 70-200mm f/4, and it feels very comfortable sitting on my XT. I don't know maby the 20D does a better job of balancing, but I've had no problems with the XT's sense of balance fitted with a large lens.

