I have also come to the conclusion that someone at Pentax is a heck of an eyepiece designer. I don’t know the timeline and all, but they seem to crank out some excellent eyepieces. The 0.965 SMC Orthos, the XOs, the XWs, etc.
I thought they were a bit strange at first, but then I realized that the hard-shell "dome" on the top of the eyepiece was a perfect fit for my face. The Pentax eyepieces just settle in and it's easy to position your eye to see everything easily.
When I discovered the TV Ethos and moved to those for my personal observing, the Pentax remained as my eyepieces of choice for public outreach. They are so easy and comfortable to use; everyone was able to enjoy the views.
I finally sold them, but had to scramble around after my cataract surgery to buy them back again after I discovered that I needed eyepieces with more eye relief. They will stay here from now on.
Again, congrats on buying the whole set!