I currently own 4 pairs of Costa Blokes, all glass, 2 green, 1 blue, 1 silver. They are ok, do not see fish as well as my old Hobies. They are ok, except service (that's how I ended up with 4) 1 pair with defective nose piece, less than a year old, when returned they said lenses faded, replaced for $90, next pair blue, while in Florida fell off my head, small chip in lens, my fault, sent in several weeks later they replaced for $120. When/if I need another pair will certainly look elsewhere. Liked the maui jims but could not find any large enough for my big melon. But the eye relief on the water of the Costa is excellent, have had 6 surgeries on my left eye so relief is important to me.