Took the kids to the DIA today(The Detroit Institute of Arts). I took my D700 and a couple lenses just to fool around. I shot only JPG's, and shot at ISO's ranging from 1600-3200. I am completely impressed. Here is one image at 3200. All I have done is resized in Photoshop CS. Nothing else. I am sure with some sharpening and tweaks it would be even better. I know the image itself is nothing special, just a sample of ISO 3200.