Pilots are not allowed to wear polarized lenses because of the interference pattern with the laminated glass in the cockpit. This also applies to car windows sometimes. So I have always bought non polarized sunglasses and have not had a significant problem with glare etc. My eye doctor gave me the following recommendation years ago and it has worked for me. Buy a high quality lens, Hoya, Dow Corning, Zeiss etc. 80% tint for everyday use, more if needed on the beach/snow etc. Neutral grey for driving (or photography) so colors are not affected, Brown for pilots to cut the haze against a blue sky and light yellow to increase contrast at night or when skiing on overcast days. Hope it helps
Marc