Hello all... Trying to decide b/w the MB and MBP, for my first Mac. I've been building various configurations trying to determine what I need. Building out the MB and MBP with the same specifications (2.4GHz, 4GB RAM, 250GB HDD) and the MBP is still $500 more. Other than the 2 inches in size and the plastic casing, are there are values in the MBP I'd be losing if I went with the MB? Thanks and apologize in advance if this information is elsewhere.