The main point here is that you are thinking of moving to a rangefinder camera as opposed to an SLR. The most important difference is that a rangefinder camera with a bright-line finder will allow you to see above, below and outside the side to side image through the viewfinder, thus acting as an aid to composition. This alone, for me is worth any advantage gained by an SLR. The M2 has a wonderful bright-line finder, but if you want the most beautiful design coupled with tactile handling perhaps a Leica IIIg will suffice.