IMHO, if functional sunglasses, only one brand stands above all, Serengeti. Not to mention long lasting, my last pair last me 8 years before i drop and lost it. It has landed on numerous occasion with glasses face down first on tarmac road but didn't cracked, just minor scratches. their best selling lens has to be driver's lens....really boost contrast and soothing to the eyes when driving under hot sun. I never remove my sunglasses when working outside during daytime cause I'm working in construction industry and exposed to a lot of sunlight. The only complain I have is after so many years of having my eyes protected by the sunglasses, I wasn't aware I had glare issues with my left eye until one day I forgotten to bring my sunglasses to work and my left eye hurt a lot when looking around and felt blur with watery eye.