I am in the market for my first NICE pair of polarized sunglasses. I'm going to get a Rx pair and I have a question about the quality of polarizaiton. Are there different levels of polarization? Is it like a UV with a %? I'm wondering if a nice pair from Eye Masters is going to be the same as ordering from Orvis. What do I need to be looking for?

Thanks for the help.

Oakley makes a great prescription and polarized lens. My buddy wears them and loves them. The Coasta Del Mar 580 lenses are amazing. I'm not sure if they offer prescription or not.