I have a nice Agfa Isolette "L" model I acquired from Jurgen Kreckle. Yep, has the blue bellows! I've had a lot of fun using this camera. He did a wonderful job in restoring it, as it looks new in every respect. Even the light meter works as it should. I use it mainly for 6X6.
I also have a Franka Solida ll which was in excellent condition when I found it. It's actually the classier of the two, and a real workhorse (cost me $30).
Once you get used to them, they are great to use. I also have other folders and Agfa Isolettes in various states of repair, mainly bellows problems (light leak city), but still useable with sealers. So I really don't go in for the "only buy newer brands" belief.