For about 20 years or so now my walk around camera has been a Fuji 645 with a 60mm lens. It's a very small camera for the negative size, and being a rangefinder, is very light and easy to use. I've always preferred a RF to an SLR because of the size, quietness, and ability to view the scene directly rather than on a ground glass. The Fuji's 60mm lens is very sharp, but not fast (only f:4).
I recently got a FED 5, which so far is checking out pretty good. If it lives up to my hopes I expect to be buying another from the same dealer.