Nikon has some great rebates going on right now. All of the digital slrs take excellent pictures, with beautiful Nikon colors when the photos are processed. The D3000 and D5000 (with video) don't have a motor for the lens in the camera, so you need to use a lens that has an autofocus motor in it if you want it to autofocus. Otherwise, they are great cameras. I don't think you could ever go wrong with Nikon. The D90 is an absolutely amazing camera. You will experience almost nonexistent shutter lag with that camera.
Nikon Correction to Instant savings on Nikon cameras and lenses sent yesterday