Okay, for whatever reason, I keep watching for a decent deal on a Jupiter 9. I've watched the guy's video comparing the (basically) five versions. Technically speaking, the Jupiter is inferior to an awful lot of newer 85mm lenses. And...I've got 85mm covered 4 ways to Sunday, and that's not even considering that I have the (IMO spectacular) M.Zuiko 75mm. I'm notoriously not skilled at portraiture. If I had one, I could use it on either M4/3 or Pentax K. All that as a preface, why should I keep watching, at what price would you go for one, and what would/do you use one of these for?