The r6.2 i own is very sexy in the hand. As well as my MP. The MP wins it because of its black paint which makes it stick in my hands. Black paint is a very useful feature. Chrome cameras slip from my hands. Frustrating!
But the most sexy camera I ever used and still use is a Black paint Nikon S3. That is a camera that the camera God himself designed. It's so dmned sexy on all levels. I just really dislike its 1:1 vf but that doesn't count in a tactile/fondling contest.
Can't argue these early Pentax models. My first "real" 35mm was an Asahi Pentax SV which I still own and works great. I bought it at the PX in Vietnam in late '67 or early '68.
More votes here for the early nominated Barnack Leicas and Nikkormats. However, those little Voigtlander Vito Bs also shoot very also easily as long as you can estimate distances well.