Hi!
I have the PII. Very light and compact, image quality very good, even wide-open. I would not qualify the focus ring as "stiff", maybe a bit "over-damped". It's very smooth but it turns slower than, say, my Ultron 28/1.9 (that is almost too "fast"). But I would say it's on par with both my Noktons, maybe didier was unlucky with his sample.
Beware that the hood makes the PII almost double the length (although it does not black a lot of the VF), My sample is fairly resistant to flare and I sometimes forget about the hood for compactness.
The lens cap is the clip-on "internal" type, similar to the Zeiss ZM line and don't really like it, just as I don't ilke the Zeiss caps. I don't use it most of the times.
All in all, a very very good value and a very good partener to my 35/1.2 Nokton.