I just sold my M5 and still have a Bessa R and an M2, and somewhere I have a IIIc (left at a crawfish boil about a year ago and haven't gotten around to going to get it). I've been shooting with the M2 even though the R is a much better camera in my opinion.
Despite having an inferior rangefinder patch and being plastic, the Bessa R just works. It's louder, it has a faster shutter, a meter, superior rewind, weighs less, etc but it always works. My Leica's ALWAYS need work. It feels like every month or so the vertical alignment is off on my M2 (not a problem to fix, but a little annoying). There are some other issues that I fix on it but I can safely and reasonably attribute the majority of the problems to age (even though the whole RF assembly and viewfinder were recently replaced by DAG).
In short, I like my M2 despite it not being as reliable as a newer budget camera.
Leica M2, IIIc, Bessa R, Ricoh GXR/GXR-M
Canon 50/1.2, Jupiter 8 50/2, Elmar 50/3.5, Collapsible 50/2 Summicron, CV 21/4, CV 35/1.7, Elmar 90/4