I am not an expert, but I'll throw my opinion into the mix. I used to wear Nikon sunglasses. I figured a camera maker would be very qualified to put good coatings on these. They were great in the sun, much better than the "popular" brands. I still have one old pair of Nikons but now wear Maui Jim most of the time and even have 2.50 readers on the lower part, which is really nice. These seem to be nearly as good as the old Nikons. I honestly have not tried the $20 glasses at the track and have to be skeptical that they can offer shatterproof, polarized glasses for this price. I also have a pair of Dewalt shatterproof work sunglasses that have the 2.50 readers on the bottom also. These are not as stylish, but great for outdoor work and are priced fairly cheap and are very durable. I really like the sunglasses with the built in reading glasses, they are great for using the phone, reading gauges at a glance, or for doing work on the bike outside.