I'm still using 400 amber glass Fathoms and can see good. Is 580 green mirror that much better? I tried to find Fathom in that glass and couldn't.
Okie, I had those Amber 400 ones and lost them. They were great. I probably would not have bought another pair if I still had those. For me, all the amber/copper base costas allow equal clarity as long as light doesn't sneak in around my glasses. I kinda feel the green mirror 580 keeps my eyes from getting as tired, but I'm not sure how substantial that difference really is. Fathom is a good fit but I think my head outgrew them...literally.