Ive been using the 27mm Panoptic as my mainstay low-power ep for several years now. I must say that the views never get old - I absolutely adore this eyepiece. The contrast is amazing, the edge correction in a 10 f6 scope was absolutely perfect with no Paracorr. Eye relief works fine for me with eyeglasses - some have said it is possible to scratch lenses although Ive not had a problem. My highest recommendation.