I'm trying to make the exact same decision. I used to use a 3x24" monitor setup with Windows, now I am using a 2009 MBP 13" C2D in front of me with a single 24

I'm trying to make the exact same decision. I used to use a 3x24" monitor setup with Windows, now I am using a 2009 MBP 13" C2D in front of me with a single 24" monitor. The problem with this setup is the 2009 MBP is unbearably slow - it lags when closing tabs in Chrome and I do miss having a 2nd 24" monitor. I use IntelliJ for dev. I have full-screen IDE, half-screen browser, half-screen terminal and then I like to have a browser open for documentation/textmate/etc. 1. Seems bad to get MBP when their will be a big refresh 2012 - with MBA 15". If the 15" MBA was available today I would buy it. Macs have good trade-in so it might be worth getting an interim solution - I'm actually considering a low-end 27" iMac so that I can buy 15" MBA next year and use the iMac as server/external display. 2. ViDock is bringing out a Thunderbolt external PCIe solution so you'll be able to drive 2+ monitors from all Thunderbolt Macs. This should be out early January/Feb. From tests you get 90-95% performance of GPU compared with desktop card! Pretty cool. No need to buy the MBP 15" for dual monitor capabilities. http://www.facebook.com/VillageViDock?sk=app_202980683107053&app_data=69f57681-2b83-45a5-b695-1ba5cd87ff48:0 http://www.facebook.com/VillageViDock?sk=app_202980683107053... 3. Antiglare high-res on 15". For coding I love having plenty of space, which makes the 15" seem better choice. I still have no idea what to choose - please let me know what you go with. I've ordered the Plugable UGA-2K-A which can drive an external 24" so I'm going to wait to see how effective that is with my current setup.