Nothing vague or fence sitting about you! Noone talks much about the 50mm f1:2. The test sites indicate a little lower specs but wow a 1:2 in a tiny camera.
I am leaning toward the 100 length as max for my taste and hand held shooting.
This is a pleasure after struggling to find the promised benefit of digital. Wonderful top line lenses for $2-300 and excellent primes with a working camera attached for $50.
I've decided to find a good cheap 1:8 for my new body coming soon. Local examples are available. Then settle down and search out some deals on some f:2 lenses, say 28 or 35 and 85 to 100 and maybe even a 50 f1:2. The debate between late 1:8 mij and 1:4's indicates very similar lenses probably distinguished be the vagaries of quality control and exceding my abilities.
Thanks to everyone.