Here's some pictures I took of the moon using different cameras. Unfortunately, I have not taken one yet with a Canon or a Nikon.
http://s48.photobucket.com/albums/f2...entcameras.jpg
One thing : there's a big difference in the sizes of the moon in the composite picture here. That's because the Kodak and the Fuji are of lower resolution (4 MP each) and they have shorter focal lengths. What you should judge is the picture quality.
Also, the pictures were taken at different times under different atmospheric conditions. So use the pictures only as a rough guide.