Hello everyone. I need help trying to decide what used MacBook pro I should buy. I'm looking at a 13.3 in MacBook pro with a 2.4 ghz 500g hd. Its a 2008 model Vs 15 MacBook pro with 2.2ghz and 320 hd it's a 2007 model. Both with intel core 2. There asking 800$ for the 13in & 700 for the 15 in. Any help would be great guys ! Thx art.