In order of most used from what I own:
Yashica Electro 35 GSN
Bessa R
Fuji G690BL
Zorki C
The Yashica is actually misplaced right now, which saddens me deeply...but it really is a gem of camera, and has helped me produce some of my best photographs. The Bessa is, obviously, a step in the right direction from the Yashica, but it still gets less use. The Fuji is a beast, and I can rely on it for making huge, 35mm ratio negatives for me. The Zorki is just fun to use and take apart. I've got a need to always be taking something apart, cleaning it, or fixing it, so I'm sort of in love with my little FSU RF. Tactility is king!