Thanks guys, I´ve been asking around here home too, and I think I might just go with the 400D. I´ll be getting a new camera, the 20D I was thinking of is used with around 7000 frames taken. And they´re very similar on paper too, so I think the 400D is the more logical purchase. One thing about the 20D that tempts me is the 1/8000 shutter speed compared to 1/4000 in the 400D. But isn´t 1/4000 plenty?

Thanks again!