Hi Ya,
I don\'t think there is really that much diference between the Canons and Nikons.
The only reason I chose the Canon was for the focus in low light and 8.5 frames a second on the 1D mkIIn. It seemed to be a little better than the Nikon D2X although the Nikon has one or two better features.
I bought two of theses...
I also bought a full frame 5D which is a cracking studio camera..
If your interested in a 350 heres a link for you to a review.
http://www.dpreview.com/reviews/canoneos350d/
Have a look around here as well, loads of reviews, should keep you busy for a while
http://www.dpreview.com/reviews/specs/Canon/
http://www.dpreview.com/reviews/specs/Nikon/
Olympus do a nice DSLR as well. The E1 is selling very cheap at the mo as it\'s successor should be out sometime next year. 4/3 system...
http://www.dpreview.com/reviews/olympuse1/
http://www.dpreview.com/reviews/specs/Olympus/