Well, I would say 50/1.2 or the older 55/1.2 (which I enjoy using).So what are they key OM lenses to look for? Just curious.
I too have the 24/2.8 & 135/2.8!I have currently the 24 2.8, 50 1.4 and 135 2.8. With the speed booster they would become (on m43 if I have the math right): 34 f2, 71 f1 and 192 f2. This makes me want to go get another 85f2, which would be 120 f1.4.