I've got a Mamiya 6K that I'll probably be selling cheap pretty soon, provided I can successfully replace the missing rubber cone around the red window (I've got two layers of seal foam around it now, but in order to avoid light leaks you have to go to MFD whenever you open the window to advance the film...the downside of the pressure-plate focus method). It's a very solid camera otherwise! I may or may not bring it on a trip I'm taking next week, but either way it'll probably be in the Sell forum soon.
Other recommendations I have for coupled-RF folders:
- Super Fujica Six. This is the best folder I've used, both in terms of functionality and IQ. Unfortunately, the front standard isn't extremely robust, so I've seen several with out-of-whack focus planes.
- Zeiss 532/16. This one is heavier than average and on the expensive side for a good copy. The 80/2.8 lens has character out the ears, though, as long as you don't mind it not being super sharp outside the center of the frame.