I love using my ipad with the bare back but I am interested in keeping it clean for a higher resale value. What brands do you guys use for an adhesive back protector? I prefer a smooth glass like finish like the type you would find on a cheap iphone screen protector (the expensive ones tend to have the orange peel texture). A hardcover recommendation would be good too. What are the good clear plastic back protectors that are compatible with a smart cover?