I have two M5 and I really believe they are perhaps the most under-appreciated devices conceived by man. Sure there are but two popular names on the internet who service them, but the world is bigger than the internet, and the meter system, even the arm could not be simpler. The viewfinder is great and so intuitive..
A fine fine camera. I like the side lugs too.. bandalier style.. no belly bounce..
The shutter is essentially the same as the other early m types, and by now the early models' snafu of the problematic shutter drum or whatever has surely been sorted out of any working bodies around.