ive already gone through two pairs of oakleys, and they both broke really easily.
i gave up on the expensive ones and bought some $15 sunglasses from REI. they are actually more comfortable that the oaks and look better on me. but, i CAN tell the difference in the lenses, these new ones seem a little too dark.
but, oh well, id rather have two pairs of cheapo sunglasses than another pair of oakleys, cuz i know im eventually going to break em.