I don't want to make another MB vs MBP thread, but I thought this was a little different. I am looking at the MacBook (preferably black) and MBP 15". $400 difference, we all know the minor differences between them. I am looking to hear peoples experiences with both the MB and MBP. I've heard issues about macbooks' casings cracking. I've also seen what happens to white macbooks after 6 months of ownership (tons of scratches on exterior and palm rests turn black. I would also like to know if there are any quality differences in terms of the hardware- better in the MBP than MB therefore making a higher quality product.