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This is always an emotive debate. But when it comes to TeleVue eyepieces I like the adage, buy once, cry once.
Something that is rarely acknowledged is the contribution that aperture plays in eyepiece performance. In my travels talking to guys with big Dobs the performance of Ethos and Delos sits above almost everything in the wide field market. But at the smaller end of the scale, you probably wouldn't see much difference between a TV and an ES.
So your decision might depend on whether you plan to stick at the hobby and maybe end up with something bigger one day. Good eyepieces can be kept and used forever, no matter what future telescopes you end up with.
Specifically, because you are asking about a 10mm, I have to say the Delos is near the perfect eyepiece. The colour tone, transmission, and contrast is better than anything I have ever looked through in a widefield, including Ethos. I have looked through the Orion Planetary, and the Delos is a nice step up in performance by comparison.
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