A Canonet QL-17 GIII is a great value. It is readily available - though might have gummy light seals that you can fix yourself. It's manual mode or shutter speed priority - automatic aperture is easy to use. Shutter is fully mechanical all the time. The Quick Load feature makes it easy to reload. And the short stroke focus is easy to lock-in with, and has parallax correction framelines.
I didn't find the lens to be amazing, but it was good enough. The main reason I like it: The camera as a whole performed very well for me - giving me a "high yield" of good pictures.