[FlyFishinYakr]

I also wear Rx glasses, over the years I noticed that if I rinse off the lenses and wash with liquid soap (soft soap) & clean with a lens cloth, I do less damage to the lenses (mine are polycarbonate). Glass lenses are heavy and also can be scratched. I have 5 pairs of glasses two devoted to fishing and I use "Cocoons" to wear over my regular glasses for those partly cloudy days were changing glasses becomes tedious.
With the price of some of these glasses in the long run it might be cheaper to purchase the cheaper glasses with polycarbonate lenses.
My Fly Fishing partner has an assortment of sunglasses (over $1K worth), he has the Kaenon's in each of light transmissions and those are the ones he prefers the most. He uses his Maui's for driving/traveling a pair of HOBIE's for spares and sold all but 2 pair of his Costas.
The most important thing is to get good quality polarized lenses.