Can’t go wrong with Costa, you would be surprised how much they help.
Sunglasses/eye protection isn't a bad thing to have when busting through the alders or scrub brush.
On my last sheep hunt, my guide told me that sunglasses were the equivalent of a banana on a fishing boat. If you are aware of that superstition.
I never wear them when I'm hunting. Too annoying trying to use them with binocs. If I did wear them, I would wear Serengeti Maestrale with polarized Sedona or drivers lenses.
Jeremy
Maui Jim -- As other have said, by far my favorite pair and by far the highest quality. I would never in a million years take an expensive pair of sunglasses hunting though, and expensive these are.
Costa's -- My original favorite for hunting, and incumbent favorite for fishing. Very tough wearing plastic frames, blue lenses are phenomenal for fishing, brown lenses are phenomenal for hunting. I kept searching for something else for hunting though, as I find the frames bulky and heavy after a few hours.
Pit Viper's -- Oorah Polarized Model -- My new favorite for hunting (and yardwork). Relatively cheap ($80.00), Z871+ impact rated, brown polarized polycarbonate lenses, side shades, olive drab, super adjustable, super light, and VERY hard to fog up. Brush Busting, Cliffs, Weed-Whacker Propelled Rocks, etc. have put some shallow scratches in the lenses, but that's about it after a year of hard abuse.
I will warn you, the Pit Viper website, marketing emails (do not subscribe...), and brand in general are obnoxious as hell, but they are very solid glasses for how cheap they are.