I currently have: 2011 air 13" display 1.8GHz i7 (Sandy bridge, dual core) 256GB SSD 4GB RAM ($1,700 in Feb) I need a new mac laptop for my niece... While the base $1,200 13" air would be more than enough for her, I'm thinking of getting a new laptop for myself and doing some "trickle down macanomics". Looking at: 2012 Air 13" display 2.0GHz i7 (Ivy bridge, turbo boost, etc)) 256GB SSD 8GB RAM $1,700 -or- 2012 MacBook Pro Retina 15" Retina display [*]2.3GHZ i7 (Ivy bridge, quad core, turbo boost, etc.) 256GB SSD 8GB RAM $2,100 So $500 gets me: Significantly faster processor (quad core vs. dual core, 2.3GHz vs. 2.0GHz Larger, much higher resolution display with faster graphics processor. An extra pound and a half to lug around. The price difference is really surprisingly small... If not for the extra weight, it would be an easy decision. But since moving from my 2009 MBP 15" to the air, I have been loving the featherweight laptop! Any thoughts?