This topic was discussed somewhat a couple of months ago but I wanted to ask more specifically if the conventional wisdom suggests a film protector (XO Skins type) or a hard protector (Vello glass type) is best. Or nothing at all?? I recall Mt. Spokane said there is already a protective cover there the could be changed. My bias is to apply some type cover anyway - either film or one of the thin glass ones. I'll appreciate your comments.