Screens and Scratches

My first reader was a Sony prs600. I would swipe the screen in the same area to turn the page. After about 75,000 page turns, I had a noticeable abrasion blur in this area. I bought my big ol' clunky Kindle DXG, in part, because it had page turn buttons. 175,000 page turns later, the screen is pristine but it's time to move on. I would like the advantages of a touch screen but I like a clear screen more.

Does anyone remember if the Sony prs600 was built with a softer screen material then current models?

Has anyone noticed abrasion blurring on the more recent touch screens?