A new 6x9 folderholic, huh? Watch out, it's contageous. You might infect more people around you.
We're focussed mainly on 6x9 CRF, so don't know much about folders with only viewfinders or uncoupled rangefinders. Here's our list.
Bessa II with either Skopar or Heliar (apo-lanthar is not to be had in your price range) - but you have to like the way the shutter is tripped: with your left hand, while steadying camera with the right hand. If you search eBay with patience and digilence, you can find a Bessa II for below market prices.
Ensign Autorange 820 - this is something we have an eye on for a long time because of the nice Ross Xpres lens, but it's hard to find and if you find one, it's a little heavy in the wallet
Super Ikonta's - some people rave about them, personally we don't like the way you have two windows to work with: a viewfinder and a rangefinder window. But that's just us.
Moskva V - Russian copy of Super Ikonta (see above) - can be had cheap, some people really like theirs.
Telka III - uncommon French folder with a 95mm Sagittar. We sold ours as we were collecting too many cameras and we wanted to keep the Bessa first and foremost. Very sturdy and built like a tank.
Welta Weltur/ Welta Solida- these come in a 6x9 version as well as smaller sizes. Very similar to the Clarovid, but the Clarovid's lens might be better. Rangefinder mechanism inside has parts that get brittle over time, break and render the rangefinder mechanism useless. Happened to us - there's still this part we need to re-make or get it machined somewhere.
Kodak Regent I - there's one on eBay right now. Never had one, but it's a nice design as far as we can see from the pics.
Balda Super pontura - rare, seldom comes up for sale.
That's what I can rattle off from the top of my head, but check out the Japanese folderholics at www.cosmonet.org - they have good info on lots of folders.