D200 is a great camera that offers a lot more, yet with a very nice price. ISO 100 provides superb images when I use tripod for nature scenes. ISO 1600 is kinda noisy. I use Neatimage to take care of the business in this case. Button arrangement on this camera is superb. It is very convenient.
10MP RAW file is very large and it takes some time for Nikon Capture to process the image. It is still worth it since RAW file gives me much space to process the files. I can image how much more time it takes if you are processing a 16MP RAW file.