I have an early 2011 MBP 13" and I'm tired of getting scratches and dents on the cover. I've been as careful as I can be, however other members of my family who use the computer could care less about appearance....My question is, what case would you guys recommend for this computer? I have seen many out there and I would prefer a clear case, that is as thin as possible. All I want to do is prevent future scratches and damage to the aluminum. Thanks...