Amber is definitely the go, just fantastic where the light conditions are low too. I tend to use grey out in the boat when it is really hot and bright, but definitely amber photochromatic polorised the rest of the time. I belileve too that better quality glasses are worth the expense. I wear Mako and Spotters but don't know if you guys have them in US.
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We do not inherit the earth - we borrow it from our children.