My choice for most street and availalble light work is the Leica MP, along with the Summilux 50/f1.4 and Summicron 35/f2.0 ASPH lenses.
MP with Summilux 50/f1.4
And the MP pictured here again, with the Elmar 50/f2.8-M, for when I want to travel light and compact:
When I returned to regular photography 9 years ago, I figured I better get started learning how to shoot and process digital pictures. Returning to the craft after a near 30 year hiatus, I felt I had a lot of catching up to do. So for the next 7 years, I moved up the digital camera ladder, until I have what I'm now using anytime I choose to shoot digital, and that's a Canon 40D. I use it primarily for wildlife photography, along with a Canon 100-400mm IS L zoom lens. Last year I even shot my first wedding with it, and the camera performed exceptionally well.
But these days, the camera I spend 99% of my time shooting is a Leica MP rangefinder film camera. The MP is considered by many Leica shooters to be the best camera that Leica ever made, as it has retained much of the company's original design, including traditional high-quality German craftsmanship. The first time you pick up a Leica (especially an MP) and raise it to your eye, you realize that nothing can compete with this camera. And once you learn the discipline of shooting a rangefinder, you begin to experience a new freedom in your photography that you never thought possible. In today's world of cameras that have everything automated, there is nothing quite as rewarding as making a picture with a manual rangefinder.