Back in my wasteful days, I would buy Ray-Ban, Vuarnet, Serengeti, but as superior as those were, I found they got lost, crushed, scratched and stolen as easy as a dollar pair. And I only got those because my Mom worked for an optometrist, and got them for me cheap. A couple of hundred dollars for regular sunglasses is ignorant.
The pair of Vuarnets I had were my favorites. True story. I was in a hurry to get home one day after I got off. I had those glasses in my front pocket. As I went through the guard shack, I ran through the parking lot to my car to go home. I got all of the way home before I realized that my glasses weren't in my front pocket. They bounced out, to never be seen again by me. Those were the last pricey sunglasses I ever bought.
Now I just buy four or five pairs of cheap sunglasses and leave them around. If they were good enough for ZZ Top, they'll do for me.