Congrats on a new lens. Planar is a fine lens. I compared it to 2 Crons and it deffinately holds its own. I like how it handles over the Crons. More comfortable to me. I sold one of my Crons after I got Planar. The newer one. Yet while I like Planar and use it more and more now, but for some shots I still prefer my Rigid Cron. Both lenses are very special, I think. Each for different application. Don't know about Nokti, never used one, but I can't say that Planar is sharper that Rigid cron or the other way around. It's just they each have a different way to "paint" the picture. I wish Rigid Cron had the same handling as Planar - Planar is my best handling lens - most comfortable to hold and focus with. Yet Rigid is so special, even though I really dislike how it handles - results it delivers make me love it anyway.
Anyway, congrats again and put it to a good use and than share some photos with us from your new Planar.