Don't write off getting one w/ a Heliar lens. I saw an RF w/ an uncoated Heliar recently that sold for less than $200. It had some issues, but the lens was clean.
I've owned many Voigtlander folders over the years, mostly the Bessa II and RF cameras. What I found is that the Skopar lens is sharpest, but doesn't exhibit that Heliar 3-D look like a.......Heliar.
Not surprising, but don't overlook the Heliomar lens. It's a 3 element lens that is much better than it should be. Why it would often give 3-D pics I don't know, but mine did.