i posted this earlier in the thread but was modded. i'll try again.
private pilot magazine did a study a little while back on the best sunglasses for aviation. oakley came out on top for each category.
you can check out the results of the study here:
http://oakley.com/private_pilot/ obviously the results are on the oakley site seeing as they did very well. please keep in mind the original study was performed by private pilot magazine NOT oakley.