I have been purchasing Spy sunglasses as my preferred choice of sunglasses for a couple of years. I have worn many other larger name brand glasses but I never found the quality of those brands to be any better. I will say that big name brands do give a higher quality frame with the addition of premium quality lenses that often are much more durable. I do not personally like polarized lenses so I cant speak about them in any comparison. I can say that I am overly pleased with the Happy Lenses that are in these Spy glasses. The clarity is amazing.I like the nice middle of the road size of these sunglasses. The arms on these glasses wrap around your head and stay tight on your head. I also don't have any problems with the glasses interfering with wearing a ball cap. These have a nice mat black finish that I personally believe helps them to grip my head better.When I bought these glasses, I had a hard time finding any pictures that compared the different sizes of the glasses. I have personally used the Dirks, Logans (these) and Coopers. I like all of them, but they have some basic difference that are important to understand when not able to try them on. Dirks are tall and wide, Logans fall in the middle, and the Coopers are small. I added photos to help with the different sizes of sunglasses. These were all nice glasses but this time I went with Logans because I wanted smaller than Dirks and larger than Coopers. The Logans are in the middle in the pics while the Coopers are at the bottom and left.If this review was helpful, I would appreciate if you clicked that it was. I did not receive anything for writing this review. I try to write reviews or something that might help others with information that I couldn't find. I always appreciate others who took the time to help me make a decision.