I worked for Pfaltzgraff for years, too - several in customer service. There used to be a scratch-free Pfaltzgraff cleaner, but it might not still be available. But I think Bartender's Friend was a recommendation as well. I have Pfaltzgraff, too, and I like the weight - which I know a lot of people don't, and Corelle is definately a lighter weight option. But they seem to me to be just a shade better than plastic, so it it were me, I'd try and clean up the Pfaltzgraff.