For the past several years I've been shooting with Rebels -- I even wrote a guide for using the Digital Rebel, which attempted to codify all my accumulated knowledge at its limitations. I felt like I learned a lot using the Rebel, enough to write a whole entry about it. When you're trying to manual focus a time trialist, you quickly learn to how to keep the rest of the variables under control.
This past July I treated myself to a Canon 30D and I can't say that I miss 'ole Rebel. I knew from the Pescadero Road Race and Burlingame Criterium that I had purchased a big upgrade, but it wasn't until the Tour of California prologue that I had a real comparison. Hopefully some of the improvement is due to gaining more experience this past year, but look at last year's photos in comparison to this year's. Last year, Jens Voigt came right across my field of vision and all I got was this crummy shot. This year I couldn't track him because he was riding too close to the barrier. He popped out at the last second and my autofocus grabbed him for this shot. Any questions?