Hi! I'm soon in the market for a new computer and have come up with two different solutions: 1. Buy an iMac 27'' (2,7 Ghz) and a Macbook Air 13'' (128 Gb) 2. Buy a Macbook Pro, 15'' (2,2 Ghz) or 13'' (2,8 Ghz), and an Apple Thunderbolt display Apart from the the usual Safari, Mail, iTunes and word processing, I use my computer for CAD (Solid Edge in Windows), Rhino 3d and some rendering (Keyshot and Bunkspeed Shot). After working on a 13'' Macbook Alu (2,4 Ghz-version from '08) I feel the need for a bigger screen but I don't want to give up the portability. Both solutions cost about the same and I'm not in a hurry to buy anything so I can wait for potential updates. Which of the two solutions would you go for?