hey, just curious to all of those that have dealt with apple refurbs.. how are they cosmetically? i know the actual hardware and insides are QCed, and i'm assuming the screen is a crucial part as well, but do you typically expect cosmetic scratches on the body, or are those buffed/replaced/whatever? (basically, when you get a refurb do you KNOW it's used, or are they basically like new machines that are cheaper because apple can't sell them as new?) and, while i'm asking, has anyone had any serious issues with their refurbs? thanks for the info!