Traded my Mamiya 645 for a near mint Koni Rapid Omega 200 with the Super Omegon 90mm F=3.5. I am very happy with it so far being my first rangefinder, and also find it intriguing that it carries the KE-58 USAF ID plate complete with contract # and NATO stock #. The best part of all? The film advance is perfect, no overlapping frames.