I've been using pop on for a few years, and can't complain. I just ordered a couple of back up pairs, because they do start to break after some time, but for the price, they are somewhat "disposable". Other companies specifically say, "eat only soft food like yogurt". I can eat corn on the cob and chew gum with pop on.(not at the same time. Finally, with them already having my impression, they were here in about a week from the day i ordered. The new cleaning machine is just ok.