they're not all created equal, I wore Ray Ban's for yr's, then went to Oakley's then switched to Costa's. been wearing nothing but Costa's for about 8 yr's now.....I know some guys have had problems with warranty service but I've never had a problem......I just got a pair of $200 Harpoon's w/ 400 lenses warrantied out, the lenses were delaminating after wearing every day for a yr and a half and I broke them between the lenses and it cost me $36....can't beat that on a pair that I wore every day for that long.....I use them every day driving and in the tower.....
I've probably sent back 6-8 pair and that's the most I've ever paid to have a pair replaced. I also recently bought a pair of Fathom's 580's with the new silver mirror and love them too.....I got them at Outcast. I've heard the guidelines are good but haven't bought a pair yet.