speedlight for S2

I am looking for a speedlight for my S2 (not underwater porpouse).

The manual of the camera indicates the SB 28 DX. It is possible to use the SB 80DX?

What are the differences?

Thanks

Escalar.

I just purchased the SB800. It is the replacement for the SB80. I believe that it is the top of the line Nikon speedlite available today. That being said, I haven't had the opportunity to use it very much yet. From my reading of the manual, it will provide just about all the topside light I could need. Cost: +/- $350 USD.