I've been using the EOS 400D (Rebel) for a couple of weeks now, and all I can say is that I'm fascinated by the versality of this DSLR.
The anti-dust function comes in handy , and the high Megapixel count (10,1) and the moderately high ISO options (up to 1600) almost make this camera a must have.

Colours and contrast are very good to, and you won't have to many problems with high noise levels.

I'm very pleased with my purchase :)

Next to the other artists recommendation I would also consider the Nikon 40D.