Another vote for Smith AO. I prefer the Guides Choice model with All Hour Brown photo chromatic glass lens. Glass is heavier than the plastic but I have not had any scratching problems. This particular photo lens lightens up to where they can be used in heavy cover or twilight and are still usable. 😮 If you check the technical aspects of the lens on the Smith web site, you can see how much visible light each lens allows (or the range in this case).
Warranty is excellent. After two years of pretty heavy use (or the croakies I was using got salt soaked?), the finish on the ear pieces began to flake off. I sent them back to factory and they sent me new pair a few days later – no hassle at all -they have a lifetime guaranty.
I like the large lens and the slight wrap them. I recommend this lens to anyone fishing where cover will be an issue. If I were on lakes, many wide streams, or salt, I might go for something that darkens down a notch or two, but these work really well for me on the streams I fish. 😎
TB