I haven't had a chance to get to a store to check out the MB/MBP. I've looked at the pictures on Apple's site but can't tell much of a difference. I read a lot of people's opinions that the MB keyboard has a superior feel or something. Would someone explain the differences between the two? Thanks. P.S. I'll be upgrading from an iMac 266 with 384MB RAM. Will I see that much of a performance difference with one of these new laptops?