Are you able to service any candidates yourself? Are you willing to pay for them to be looked at by a professional repairer? Some of the possibilities mentioned are very good, but are likely to at least need the shutters cleaned. And it is not always easy to find really good ready to use examples.
I've been very pleased with my Voigtlander Vitessa that has a 50mm Ultron f/2. But on arrival I had to do some servicing and adjustments to get it working correctly. It's a unique design. I don't find it too bad a camera to work on actually, though there were quite a few running changes over its production with things like rangefinder installations being modified, and the wind plunger can suffer from abuse or poor workmanship. But if you can get one that is working well it is a delightful, pretty, interesting camera with a superlative lens.
Out of left field, the first two Contaflex SLR models are fairly compact for a 35mm SLR. Much of that relates to their lens installation that does not protrude far from the body. They have a fixed 45mm Tessar that's excellent, a bright reflex viewfinder, and build quality that is outstanding. But you can forget about buying one that is ready to shoot because recently serviced specimens that are good to go are very rare. You'd need to get it looked at by someone prepared to attend to a sticking shutter and drive rings, or do it yourself. They're not really as bad to work on as their reputation suggests, but whether or not you're up to removing a shutter and re-installing it I don't know. But as far as I noticed you didn't mention a budget either, so it's hard to offer better suggestions without knowing what you are prepared to spend.
Cheers
Brett