When I had the R9 and later the DMR, I started with the 19mm, 50mm and 100mm and 180mm lenses. They are all spectacular. Then I bought Guy's 28-90mm to round things out in the wide range, I was shocked how much I wound up using it. It is the best zoom I have ever used -- very sharp, little distortion, useful focal length, great ergonomics, and even very nice bokeh. I used it more at 70mm than 90mm, but it really does a great job, as you are demonstrating! The 180mm APO was the best lens I had ever used from a performance standard (until I got the S2 and the 120mm), but I found it a bit less useful due to the very long focal length. In my opinion, the best lens in the whole Leica R range was the 100mm f/2.8 APO -- it is nearly as good a performer as the 180mm, yet it is of a much more useful focal length, it's smaller, and it doubles as a brilliant macro lens. It is a true beauty. The 50mm f/1.4 Summilux E60 has the nicest character of any 50mm I have used as well...not as sharp as the 50 lux ASPH, but sort of a mix between it and the 50mm pre-asph -- blending the best aspects of both. Also a bit of a dream lens! There was a reason that people shot Leica R, and it wasn't the bodies!