The DX5000 is a great camera. I have used the Dx3000 for teaching since it first came out.
The camera is great for the "point and shoot" diver. If you are looking to take good quality snapshots, this is your best bet. The macro capabilities are fabulous. Focusing at approximately an inch from the subject, you can get high quality macro photos with great color and detail.
The zoom is great (24-85 approx), and the size of the camera is compact so you can just clip it off on your b.c. The option wide angle lens is a great compliment to your system. One thing I really like about the DX 5000 is the capability to add things to your system. You can start with the camera and add the strobe and accessory lenses later, or you can order it in a nice package with the Pelican case.
If you have any more specific questions reg. the camera, pricing or anything, send me a PM.
Best of luck,
Mike Luzansky
h2ophotopros.com