I am currently using the 35 pre ASPH lux at 1.4 and 2.8 on the M9, I like also the 35 lux ASPH at 1.4 and the 35 Summicron v4 at anything between F2-5.6. It very much depends what I'm shooting and sometime I cary all three lenses, shoot and decide later in PP. They all have different signatures to my eyes. I sold off both the Notiliux 1.0 (which i regret sometimes) and the Nokton 35/1,2 which I don't miss at all both were sold because I thought they were too bulky as I did with the 75/1.4.