I have never worn the Costa plastic lens. I love the glass but I need a new pair. What are some opinions on the plastic vs the glass lens?
I quit wearing the 580G when I dropped them on the vynyl floor at Grosse Savanne and one of the lens cracked and some shards of glass came off. I couldn't see that being a good thing with a weight came flying back and hit the glasses. I have the 580P and they are ok. Lighter but scratch easier.
I don't see why people think the quality is all that great. Stay away from those with the rubber insert on the frames. It deteriorates over time. It will separate from the frame. It seems that sunscreen effects it. Warrantee is so, so. You never know what the cost will be. Markup on them is ridiculous but that's true with a lot of retail.
Only the 580P passes the ANSI Z80.3 and Z87.1 impact rating. The G lens do not.