For weight and flexibility, I often use a Nikon FG+50/1.8E+100/2.8E. Coat pocket-able, good viewfinder. LED meter readout for low-ish light. Often switch over to an FE body. For MF, I use a Mamiya 645 Super+80/2.8+winder grip.Nice rig but noisy. Sometimes shoot a Bronica SQ-B but prefer it on a light tripod for max sharpness. Fast handling and very quiet.