hi guys, I'm new here. I was wondering if you could give me a suggestion about what HD to purchase for my January 2010 MBP. it's a 2.66 GHz dual core. I'm looking for a 500g @ 7200 rpm. any idea about brands and types (do all tyes fit in any mbp?). I stumbled uppon this. what do you guys think? P.S. any idea on where to sell my 320g 5400rpm HD besides ebay?