Someone brought up rangefinder (M series) Leicas. I couldn't find a copy of the original M6 review I wrote for Photo.net in 2000 but here's one I wrote for them on the M8 and the Summarit lenses... If you have a copy of the M6 article can you send me a copy???

Please?

https://visualsciencelab.blogspot.com/2010/06/i-wrote-this-couple-of-years-ago-for.html

this link will take you to an early (2010) blog post which discusses my time with the Leica M8. 

Added: Matt Osborne's 14 problems with Leicas. He mostly covers all the problems with using Leica M cameras through the ages. Very good, brief video:

https://www.youtube.com/watch?v=oqmDnON3VWo