Well, let me start that I have a number of pairs of sunglasses, including Oakleys, several Ray Ban's, even sime Foster Grants (a best buy at Walmart, if you want good, cheap, polarized sunglasses).

I gought a pair of Dollger several months ago, and they are the equal of my favorite pair:  namely a pair of Ray Ban's, that cost six times the Dollger's.  So how much did I like this unknown brand?  Well,
I lost my original pair, and immediately ordered another pair.  Can't give a better endorsement than that!