Hi Paul,
I have looked through a few ES eyepieces, and I think they rate pretty well. My ES 20mm 100-degree holds up very well against the TV 21 Ethos, for a lot less cost!
Personally I like a 68 degree fov, and the ES 68's have a pretty good reputation, so I don't think you would go too far wrong with them.
Good luck, and all the best,
Dean
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