Very good experience with the "disc" ...

... Because it is compared to a plastic sheet to apply a lot easier. After I'm not a professional, I could correct two times with carefully peeled off and re-create what had never worked with a plastic sheet. When pulling a plastic wrap charges faster and attracts the dust formally. The "wheel" is also easier to clean as a plastic sheet. In a plastic sheet I had always wipe much more. When the glass pane is sufficient a simple cloth and I'm happy with the result. I personally prefer the glass pane.