The final addendum to all this is that the 25mm ES100 has enough ER to use with glasses on, unlike all other 100° EPs available today. So that choice made a few years ago may not matter in the long run as that ES ep may replace the 31mm 82°. But then look at the price, same as the Nagler…
Well, this depends a lot on:
how deep-set your eyes are,
how close to your eye the lenses of your glasses are,
and how much pressure you want to exert on your glasses when you look through the eyepiece.
It's why some people find 12-14mm enough eye relief for glasses, while others find 20mm to be barely enough.
When I tested the 25x100, I did not find its eye relief sufficient for me to see the edges of the field, even with peripheral vision, while wearing glasses, and I wear thin lenses close to my eyes. I was not, however, willing to grind my expensive glasses against the top of the eyepiece.
The rated eye relief of the 25x100 is 14.5mm, while the "effective eye relief" (the distance from the top of the eyepiece to the exit pupil) is actually about 2mm to 3mm less.
Personally, I find an "effective" eye relief of about 17-18mm to be the minimum I can tolerate with glasses on.
It's great you can see the entire field with glasses on, but I suspect very few glasses wearers would be able to.
I'd like to quote your whole response as it's spot on but emphasize the green highlighted portion. I don't mind mashing my glasses a bit and yes, this is necessary on the 25 ES100 and many other widefield, low power EPs I use. To be frank, I couldn't tell you how much of this I do with any of the Meade 5Ks, 31AX, or the 31mm Nagler when I tested it. I'm so used to doing that that it hasn't been an issue for me. Clearly though, a number of people are not going to be satisfied with that.
The take home of that for me is that I really did have a problem with the Meade and ES 30mms, even with mashing, as well as the 24 Pan and a number of other EPs. And I suppose I have reasonably well-mounted scopes (a concern of mine from the start) as that kind of viewing will induce shakes in unstable scopes.