In the 20th Oct issue of Brit mag Amateur Photography, they tested the
Canon Rebel XTi/400 against Sony's A100.  The result was the Sony won
in nearly every category except noise.  However, even in the modest
reproduction quality of that mag, you could see drastically worse
pictures (from a resolution and sharpness standpoint) than the Sony.
100% crops from the centre of the frame were far different from one
another.  If you were to choose a camera based on this review, no one
in their right mind would choose the Canon.  Which leads me to wonder
if in-fact part of the problem was because of Canon's miserable 18-55mm
kit lens which has been a dog for Canon for too long.  I simply can't
believe the Sony is that much better, particularly since I've seen
full-sized images of the same subjects taken by both.