The Nikonos used to rule the roost, but digital pretty much put an end to that. That said, I recently got myself some Nikonos stuff on eBay. Why? The Nikonos is simple and the optics are amazing. I do 1-2 trips a year. I'd rather not deal with diopters, lens gears, etc.
In December I got a Nikonos V body with 35mm lens. The 35mm makes a great paperweight. Then I found a 15mm lens w/ viewfinder for a little over $600. Granted I can't see the results immediately, you can't argue with the quality of the lens. The 15 is sharp, sharp, sharp.