Ever look at DPreview.com
, they have REALLY indpeth reviews of alot of cameras from all the major manufacturers. They have a sample gallery as well for most cameras. AND there's a listing of pricing from major sources so you could compare the costs. If you need more pricing sources, after finding the camera that you'd like, go to Epinions.com
to find the best price and perhaps a review or two.
My vote leans more towards Nikons. Girlfriend has to use them for her research stuff, and I believe that Woobie (is he still posting??) had some insaine pictures with his E46, he had a Nikon D70.