Leica M2
Pentax ME super
Kiev 60 (complemented with some Zeiss Jena glass)

I like them because these are very straightforward, no bells and whistles cameras, that truly deliver. Superb viewfinders, robust and, at least when it comes to the first two in my list, great ergonomics (except for the idiosyncratic Leica film loading mechanism, which is nevertheles compensated by many other advantages, like stealth).