I'm a sunglasses guy. I've always had to squint in the bright sun and when i finally got a job in high school, people thought I was nuts for buying $90.00 Arnette polarized shades. I used to lose cheap sunglasses and get headaches. Then the Arnette's made that all change. Since then, I've always bought high quality shades and never broke the $100.00 threshold. Almost 20 years have gone by and $90.00 is still the magic threshold.
Why mention it? Because NoFear Spy Sale is blowing out $80-$130 Spy sunglasses (my favorite brand) for $10-50. Do your eyes a favor and drop some money on good optics and feel your headaches go away. And while you're at it, pick me up a pair!