Good glasses definitely make a big difference. The copper/brown lenses are popular because they actually increase definition and depth perception, both of which help you see the fishes better (but at the expense of true color definition). Gray lenses block more light and are appropriate for very bright conditions, but are not as good at increasing definition. Gray also has correct color definition, but that's why the copper/brown lenses are better at spotting fish. I gotta disagree with Steelydan about glass. As long as you know the pros and cons of poly and glass, then poly can be a great lens material. In my opinion CHEAP plastic lenses have given high quality plastic lenses a bad rap. Glass is still optically superior, but only if it's really good glass. And to beat high quality plastic lenses, it has to be really good glass. Glass is heavier than plastic and also breaks when dropped on things like rocks and reels. On the plus side glass is way harder to scratch, will not be stained by chemicals like plastic will, and can be the best optical quality you can get. Pros for polycarbonate are it's much lighter weight, shatter and break proof, lower price point and totally acceptable optical quality. Here's the shades I have and what I think of them: Smith- have had several pair and always been happy. Lightweight and easy to wear all day. Robust frames. No complaints about lens quality. All mine have been polarized copper polycarbonite lenses. Large frames and arms mean not doing the hand-beside-the-head-blocking-the-light thing to see into the water. I covet a new pair of Smiths with their Techlite glass lenses, which are fairly lightweight for glass, but may be a bit fragile because they're ground thin. Make mine polarchromatic copper, please... Ray Ban- a couple plastic lensed glasses that worked fine. One pair of classic Aviatiors in dark gray lenses with silver frames- they look badass. Very good optical quality from the glass lenses and very nice for those bright days and long drives. Don't use 'em for fishing because the lenses are the wrong color and too dark. Revo- most expensive shades I've owned. Glass lenses are amber colored. The best optical quality I've had, hands down. Tint on the lenses just seems more "perfect" than others. Beautiful and make me look like a slightly portly rock star. But, they're heavy. Heavy enough that I almost didn't buy them. They start to hurt my nose after a couple hours and leave red marks there when I take them off. Major bummer, but I wear them anyway. I haven't worn them fishing because of the weight, plus I'd cry if I dropped them in the water. I have no doubt they'd be awesome fish spotters. Maui Jim- One pair I bought last year, the Ho' Okipa style with bronze lenses. My new favorite fishing shades! So incredibly light they disappear when I put them on. True all day comfort. Bronze plastic lens is high quality and the tint is great for fishing. The tiny, minimal frames keep them lightweight but don't block any light so you do the hand-next-to-the-head-blocking-the-light thing. And the minimal frames would be easier to break than burlier models. But the high quality plastic lenses, good performance, ridiculous comfort, and good looks put them out front for me. For now... Native- don't own a pair, but I sell them at work and can recommend them. They came out with a new polycarbonate lens last year that, according to them, is as good as any glass on the market. Well.... whatever. But their stuff is very good. Most of their models are outdoor sport styled, with good coverage and anti-fogging vents. Think triathlete and you'll get a good visual. Lots of styles and lens colors available. Costa- have never had a pair on, but I'm dying to try them. A lot of folks who have them say they're the best. Bewildering choice of lens colors and tints (they are two different things) but may well be worth the price.