Do you guys use any cases or sleeves? I am going to get a Macbook air tomorrow or thursday and should I buy a sleeve/case with it? Do you guys have any signs of wear on your MacBook Air? Scratches, dents, nicks if so how did you get them. My friend's macbook air's palm rest is all glittery and shiny but the ones for display are dull. The glittery seems too weird and I like the look of the dull one. Does your macbook air get glittery with use? Also what other signs of wear does your macbook air have?