I can't help too much on your exact question, but--
The Medalist uses basically the same lens as I have on my mini-speed graphic (105mm ektar for me, 100mm I think for Medalist). It is a pretty amazing lens, so I think this would be a good choice for you.
A couple of suggestions: David Goldfarb posted something a while back about a modification of the medalist lens to a modern 35mm camera.
Also, depending on what you want to do, perhaps the mini-speed would work out. A camera/6x9 back and lens will cost more than the auction medalist, but you would have the ability to change lenses and backs. It would be slower and bigger, though.