Any of the Welta Welturs would do you up brown. Uncoated optics are the only drawback. Usually cheaper than any of the other well-known vintage options, great viewfinders, built like tanks. Handy depth of field table on the top plate. I love all of mine. Some of the 6x6 and 6x9 models convert down to 6x4.5 with an insert as well, but that insert is the first thing to be lost to history.

--nosmok