I used to buy nice sunglasses - Ray Bans and Oakleys, when I was younger, but I kept losing them.  Since then, I always settled for the cheap 12 dollar glasses that you can buy at the mall.  That way I don't feel so guilty.  Now that I have learned to take better care of my nice things, and moved to Oahu, I needed a good pair of glasses.  I've always heard great things about Maui Jims.  My niece and sister bought my brother-in-law a pair for fathers day, and I was really impressed at how light they were.  I ordered a pair of lighthouse with the bronze lens for the purposes of fishing.  I use it everytime I drive, fish, practically everytime I am in the sun.  Love these.  My fiance prefers them over her ray-bans, so I will be getting a pair for her as well.  I was looking to buy a different style/color so that we don't have the same glasses, but I can't find one that I love as much as these.  Def recommend!

***Edit 12/10/2012***
My lens broke on the glasses - my fault more than the glasses, so I sent it in since it was still covered on the warranty.  Sent in my $10 + taxes, and got the glasses back in less than a week! (might have helped that I am in Hawaii also).  Not only did they replace BOTH lenses, but they replaced the temples too.  I practically got a brand new glasses.  It's great because the lenses were kinda scratched too.  Maui Jim really took care of me.  I will definitely buy more glasses from them just because of their warranty.