Olympus had a great series for both the 1/2 frame and full frame market. They supported the rangefinder market longer than most in terms of making high quality non-slr cameras. Their lenses were 1st rate; they learned how to gind and make excellent lenses from their 1/2 frame designs and that quality still is here today.
The RD is one of those few cameras that just seemed to have it all right in terms of handling, features and results. I too liked the meter lens being within the filter coverage; especially when I needed ND filters or wanted to use a polarizer.