Explore Scientific are good eyepieces. I had the 30mm 82 degree model before upgrading to a Televue Nagler 31T5. There is a difference, but not an extraordinary one. They're both leaps and bounds above the 30mm superview though. I've also got a 14mm 100 degree ES eyepiece, which is very good. I've found with some of these larger eyepieces that an extension tube is needed to reach focus. The Baader 8-24 zoom is also good for convenience.
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