I just was in the same situastion regarding eyewear.
I bought Serengeti Medium Aviator, with drivers gradient glasses.
Probably the best sunglasses i've head. I often land on snow covered places, and the combination of sunshine and snow, no match for these sunglasses.
I bought mine at opticsplanet, at about 100 or so dollars, not to expensive, now a days due to falling dollar currency!
good look with your pick!