Hmmm...long thread.

Well, I don't have to think hard, in a 35mm SLR it is the OM-1, been that way for me for almost 40 years.

For a little viewfinder camera I've always had a soft spot for my Olympus Pen original, the fully manual one with a lens focusing to a little less than 2 feet.

I know, one is full frame and one is half frame but both are 35mm cameras. I also enjoy my Pen F reflex, my second favorite half frame.