I already own a Nikon D5000 and ordered the D3100 because of it's lower light capability and better HD video capability. HOWEVER, I was disappointed that some of the features I loved about the D5000 have been omitted with the D3100. The D3100 has no "scene" mode - ideal settings for beach, snow, autumn leaves, pets, etc. This mode was replaced with a "guide" mode... not needed if you refer to the manual and if you are familiar with the camera.
Also, regarding my order, Cameta Camera stated that the camera, (body only), "includes ALL original camera accessories (the Nikon USA Warranty Card, Batteries, Cords, Instruction Manuals, etc.)" but NO cords were shipped with the camera. I will contact Cameta Camera about this.