Originally Posted by PatW

I shoot with a D300. It is a very nice camera. It is not really state of the art now. Nikon now has the D300s which is a bit of an update. The build on the D300 should be comparable to your D100 so it should "feel" right in your hands. The D300 also has 12 Meg. Since the D300 is out of production, you can probably get a nice price break on a used one. KEH carries used cameras and you can pick up used equipment on the Nikonian board (the people there often sell very nice equipment on the classifieds). The D300 is a bit dated now. It was so good when it came out that it still stands up. People are thinking that Nikon may come out with its successor this fall (Nikon likes fall releases). But predicting what Nikon is going to do is not really possible. I think Nikon has better security on its secrets than the Pentagon. They certainly beat the US State Department all hollow.

If you want a more current technology, the D7000 came out this year. It is not as good a physical build as your D100. But I hear it is still good. It has really nice high ISO performance. Its autofocus is not quite as good as the D300, or so I understand.