For the last 18 months or so, I've used almost exclusively: Leica M2 and rigid Summicron 50mm loaded with Ilford HP5+ rated at ISO200 and developed in Perceptol (or, during the Perceptol drought, Moersch's Perceptol clone - EFG).
This combination seems able to do everything I want to do (portraits and street) and the operation of the camera is becoming more and more intuitive. Most days I don't even bother with a meter and I know what field of view the lens will take in before I put the camera to my eye. I can also guess pretty accurately what the distance is - using the forcusing lever - and the rangefinder just confirms this, or suggests a minor adjustment.
I do have other cameras and lenses, but I'm going to stick with the M2 + Summicron + lots of HP5+ combination on a forthcoming 3-week trip to India. I might take an M3 so I can have a body loaded with HP5+ rated at ISO 1600 for night-time shots, but this would be my only concession.
Cheers,
Seán.