Maui Jim sunglasses have the best optics (imho) and a patented polarized coating. I have a pair of Banyans and wear them almost all the time I'm on the clock, even in cloudy and misty weather. I've tried the cheap sunglasses and it never fails that I get a small headache by the end of the day. JM's aren't cheap but the customer service is bar none. My wife cracked the frame at the nosepiece and I sent them in with the repair order stating "drunk wife broke them at a party". They sent me a brand new pair without even callin me, all I had to do was pay shipping. A few other drivers in my center have them and say the same things I've said.
Maui Jim Sunglasses - Banyans