I have owned Corelle winter frost white appetizer plates for years and years. We use these almost every day and have washed them on the upper shelf of my dishwasher hundreds of times. I cannot tell the difference in my older plates from my additional recently purchased ones. Unlike other manufacturers, these do not show the clouding that have made me discard those from other companies. This makes me conclude whenever I purchase Corelle, I will never have to put out good money after thowing away bad money.