I’ve been with Netflix since the beginning. I get maybe one unplayable disk out of every 100. Their turn around is so fast that it really isn’t a problem. I would bet they don’t replace them until they get a complaint. I had one that as it got farther into the movie the more issues it had, when I took it out and turned it over to inspect the surface it fell in to two pieces held together by the label. I’m just glad it didn’t fly apart in my player.