Looking for a bit of advice folks. I'm after upgrading my ageing 13" MacBook with something I can use as an office machine. I'd also quite like a triple monitor setup, powered by the laptop. (Probably 3x 24") The way I see it I have two options: 1. MacBook Pro 15" retina. comes with HDMI and two thunderbolt ports - could power three HDMI monitors on native graphics card. (More money than I was planning on spending...) 2. MacBook Air 13" i7. Intel 5000 graphics only. Would have to use two USB 3 adapters (such as a "Cable Matters SuperSpeed USB 3.0/2.0 to HDMI Adapter") to power two monitors, with primary central display powered by single thunderbolt adapter. The difference in cost between these two machines is around £350 ($548) (specced-up Air v. standard Pro), but with the Air I would have to spend an extra £100 ($156) on adapters, so really the difference is more like £250 ($391). Is the difference in cost worth it for the (bigger/bulkier) Pro? Does anyone have any experience using USB 3 video adapters? Thanks.