I can recommend canon.Depends on what level you need - D60/D10 is great camera but semi-professional.If you would like to go for high res print or need really fast burst then go with canon D1s (11.4 mpix) - pro stuff (and I think the best digi am so far).
Also cameras using foveon chip can produce very nice results and you don't need 6 or 8 mpix - just 3 mpix chip is the same quality result and color depht.
Also the camera body is definitevly not the most important part of your photo equipment - all depends on your skill of using the right lenses and lighting
anyway
www.dpreview.com will answer all your question