I was not planning to upgrade my Camera that soon .... until I saw a 40D body on Craiglist last night. 9 months old 40D with about 1600 photos taken (Man .. I took 10000 photos with my XTi since late March this year) for $600. I know the 50D is out but the 40D is still a very capable camera. So far, when it compare to my XTi ... I like the better noise handling (higher ISO performance), faster flash sync speed (1/250 vs 1/200), higher FPS and better grip. And .. I am not sure if I am seeing things lol ... it seems that my 50mm F/1.8 lens focus slightly faster with the 40D body.