My friend has an early 2008 MacBook Pro and it has dents all over the place. I really would love to prevent this and get one of the hard, snap-on cases from the store when I go to buy my new MBP. I see two online that I like: the Speck SeeThru satin (black) and the Incase Perforated Hardshell (black). Does anyone have experience with any of these cases? Any other snap ons to consider? Thanks!