I bought a pair of Tifosi about 5 years ago and still have them. Really liked them and found them to be comfortable. But the lens tint faded unevenly over the years. Mine came with two tinted pairs and a clear pair. I used one pair for awhile but swapped them out due to scratches and the mentioned tint issue. Now the second set of lenses in also all scratched up and once again the tint faded uneven. I wonder if it comes from sitting on the dashboard of the car day after day. The blue frames have also started to flake off the color in about the last year. Finally the rubber/metal earpiece on one side has come unbonded from the plastic main frame. I take care of my glasses but they did seem to scratch easy. All that said I find the optical quality to be fine and they were comfortable. Oh, but they were prone to fog up despite being vented. About 4 months ago I bought a pair of Jawbones as a replacement. Did not want to pay the price and I think they look ugly. But wow do they feel perfect on my face and have yet to give me any troubles. They have never fogged on a ride and on hot days I can feel the venting working and a breeze coming through. But there was also one windy day where too much wind was getting through and it irritated my eyes. They hold just fine to my face and the only time I have to adjust them is if my helmet is too loose and pushes them down. The polarizing lenses work well and do help me to see the road surface better when the sun's position is right. The large lens surface is great and I can look over my shoulder easily to check for traffic without the Jawbones frames interfering at .all. Anyway, these are just my observations, take them for what they are worth,