I've had mine for 4 years. I had Decots for years before, and those are fine glasses, too. I like the NYX better because they are lighter, more comfortable, wrap around, and the lens is closer to your eye so the glasses don't have to ride up high on your face. Both the lens and the prescription insert are polycarbonate, so you can't get much more protection than that. For about $ 90 you get the glasses, three lens, and the case. My insert cost $ 170, and has a bifocal portion, which I recommend if you need it. I'm tempted to get the progressive insert next time.
These glasses have gotten very popular, so when you see someone wearing them, ask his opinion. It'll probably be the same as mine.