After buying an M3, I dug around for a lens for it.the Cosina 50mm 1.5 Nokton was too big and I did not like the bokeh. The 40mm 1.4 Nokton was nice, but the framelines not matching up was annoying. So, I ended up with a Cosina Planar 50mm Zeiss 2.0 lens. This lens is a very very nice lens. It is sharp wide open, and I am very happy with it. My question, with Leica prices somewhere up in the stratosphere, how do you guys think the Cosina Zeiss line compare with comparable Leica focal lengths?