I am currently using the Leica 35mm Summicron asph f2.0 as my standard lens for M9, I gotta say I am a little bit dissapointed at the lens, not because I m not happy with its performance (its nearly perfect), but the price between the Summicron and Summarit does not justify the difference between the two. Once again, proves that better (more expensive) equipment does NOT make the photographs better, I am at the stage where I am comtemplating to myself that if Leica is worth its pricing at all, and if I really need a Leica to enjoy my photography......many of yous would already have the answer to that question, but as a Leica fanboy, thinking about this is like blasephemy. Anyways, I would do a 35mm Summicron asph f2.0 review when I get more aquented with it.