Hi Mike,
When we met on Friday night at SPSP I wasn't aware that you were chasing a premium medium power eyepiece or did that desire grow over the weekend
When we get together in the near future for an observing session I will be happy for you to try my 14mm and 10mm Pentax XW's, I also have the 7mm and 20mm if you want to try them as well. All the Pentax XW's have 20mm of eye relief and a 70 deg AFOV which I find perfect for me. The 14mm Pentax also barlows very well in the Televue 2.5X powermate giving a nice planetary magnification of 220X with 20mm of eye relief. This is in my 10" F5 dob which is the same as yours.
Clear Skies
John Bambury