Super Fujica-6 user. Very nice lens. Got some very good images with it. I like the unit focusing of the lens. I like the size and the overall sturdiness. The top plate of the Super version, that metal bubble, dents easily so be careful. The bellows developed leaks after a few months. If not for that it would still be my basic 'pocket' 6x6 camera.
The Zeiss Super Ikontas are heavier, all in all more sophisticated. The Fujica is more along the lines of the Mamiya-6 folder.
Super Fujica-6 owner here… nicely built. Excellent lens, good rangefinder patch, decent viewfinder (especially for that era, where most viewfinders were just squinty peepholes). Auto winding mechanism prone to failure, but can be used anyway. Mine won’t stop at each frame, so I have to stop when the frame number is centered in the little ”window”. Sort of a “red window” camera without the issues of having a “red window“. Nice travel camera.
Another Super Fujica-6 owner here. Nice lens, not too heavy and decent viewfinder/rangefinder. The lens, while pretty good, is not quite as good as that on my Iskra, or Certo Six. I got a really nice one complete with close up attachment.
I did recently give it a bit of a clean under the top plate as the shutter mechanism was a bit sticky. Just old grease that had gone sticky. It's relatively simple compared to something like, for example, the Iskra.