I want to get my parents a Macbook for christmas but I am not 100% sure on the size. They don't do anything more than internet browsing, email and iTunes. They currently use my old 15" Powerbook G4 from 2005. It's still running 10.4 Tiger and is very slow by todays standards. Some websites don't even load anymore since Safari can no longer be updated. I have been intending to get them a base 13" Air from the refurb store. That should be a giant step up from the Powerbook. The 15" pro is overkill for them plus its more money than I can spend right now. The Air is even pushing it. But my main concern is going from a 15" screen to a 13". Do you think it would be that drastic of a change? Even though the new MBAir is 8 years newer and will run circles around the old powerbook, just because it is slightly smaller they might think it's a downgrade.