Frank- you are right in fact I have a 35mm a 50mm and a 75mm which covers most of my needs. The 75mm lens is a Voigtlander 2.5 Colour Heliar which performs really quite well. Not as good as the 35mm and 50mm which are Summicrons but the Voigtlander is my least used lens. My next step is to get back into wet processing, having not done it for 25 years. It is only since coming back to Leica that my concentration has been B&W. Most of my photography over the past two decades has been colour reversal- Kodachrome but Leica optics seem to cry out B&W don't you think?