I am a interface designer and about to get either 2009 27" iMac core 2 duo with installed 256gb SSD or 2012 MacBook Pro i7. Both in the same price. Already own 2011 27" iMac i7 and thought of getting the older 2009 model to use as a dual display but then I won't be as portable as getting MacBook Pro. What are your suggestion? Which one is better value for the money?