A lot of folks comment on the Pentax XW eyepieces being very good when paired with the Pentax scopes. But if you read some more recent reviews of astro eyepieces the Televue DeLite equals it, and in some situations has improved resolution. While the Televue DeLos has been rated by a number of reviewers as having better optics across the board than the XWs. Both Televues have easier eye placement and are more comfortable to use. (and yes, I have compared the 14mm XW and the Televues listed myself, and I also found the Televues to have easier eye placement and to be more comfortable).
This is one of several reasons we went with the Telvue DeLite and DeLos eyepieces in our Pentax scopes.
The Pentax XW series provides some drizzle, fog, splash protection that the Televues lack, but there is no reason you can't have both eyepiece lines in your kit for different conditions.
What I do find interesting is the current need to have a zoom eyepiece on all scopes. Viewers will accept a substandard zoom eyepiece over a high quality fixed eyepiece. Sure costly zooms have greatly improved, but they also may sacrifice other traits one might need (eye relief), or like (a large sweet spot).
The spotting scope industry has reached a point where there are very few brands that offer fixed eyepieces, and those that do offer a very limited variety. Most setups have zoom eyepieces. If that one zoom eyepiece that Brand A sells doesn't work for you for some reason, then Brand A is out of the running as a scope option. Or if Brand B's zoom does work for you, but is 4x what you can afford, then what other options are out there?
I am also surprised at the number of people who buy a scope that takes astronomy eyepieces, then spend as little on an eyepice as possible and comment that it's a bad scope. The eyepiece is a very critical component on a scope and should not be cheaped out on.
This is why I like the Pentax PF line, and the approach of the Celestron Regal M2 line. The buyer can find an eyepiece that meets their need without being locked into one option.
From past experience with Televue higher end telescope eyepieces , I have no reason to doubt your assessment of the Televue DeLite and DeLos giving outstanding views similar to the Pentax XW’s when used on the Pentax Spotting Scopes. Apparently many purchasers who purchase scopes that would take Astronomy 1.25” style eyepieces either by design or modification, opt to buy the lower end eyepieces ? I see it here. Whether it’s due to the lack of funds or just different opinions of what we are seeing, we all have different expectations/priorities when it comes to our optics.