The Nikon F had its share of idiosyncrasies, but the worst was the Photomic finder. The camera and finder were capable of accurately metered and sharp photos, so I used one for years despite its awkward handling. I do still use Nikon F, but with a neat and simple prism finder. In comparison, Leica RF cameras seemed to be designed by photographer/engineers to handle well, deliver fine images, and last for decades.

My first half decent 35mm was the often maligned Mercury II. Build quality and reliability were better than the Argus C3, but it was as ugly as the brick and lacked a rangefinder.