Here's something else I remember from my days at Pfaltzgraff. It seems like the type of flatware you have makes a difference in marking on your plates. And stangely, the better your flatware, the more marks it leaves. Apparently, the flatware leaves a tiny "trail" which shows up as a scratch on the dishes. Some dishes are more prone to this. I remember the matte finish patterns like Folk Art or Tea Rose marked worse than a highly glazed pattern. I know this doesn't help in getting the marks off, but thought it might help when choosing a new dish or flatware pattern.