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Best 10mm eyepiece for the price!
Compared this to an Orion 10mm Plossl and Celestron X-cel 12. On the moon in a 4" Mak, I prefer the Edge for sharpness and contrast over the plossl, plus easier to look through. Contrast or brightness seemed a bit better on the Edge over the X-cel, plus it was sharper toward the edge and lighter in weight. On Orion in a 5" f5 reflector, I again prefer the Edge over the others for many of the same reasons. My new favorite eyepiece!