Now, this is obviously going to be Oakley biased, I know, but all the other threads I can find on this are on boating and fishing forums, which obviously sways the opinion toward Costa Del Mar, so this might balance out some of the information I get. Both of these are obviously top tier sunglass brands, but I'm trying to decide which would be better all around. One thing I've read is that the 580 lense technology from Costa is superior to that of Oakley. Is this true? As far as frame and look go, Oakley wins that category every time. Have any of you had any experience with Costa? What do you guys think? Any input would be greatly appreciated. Thanks!