my favorint of the fixed lens rangefinders is the canon ql17 giii. Youve held one so you know. The fit and finish of this camera is ecxellent. Really a step above the others.
The Olympus 35RC is another one of my favorites. its smaller than the canon with a limited shutter speed but a nice sharp lens.
The Oly 35RD is nice on paper, but it has similar shutter problems to the canon, and it is hard to service.
The Oly 35SP is larger than the canon, but is probably the most fully featured of any of the bunch.