Need some help on office setup. Got some extra money for my practice I need to burn. Decided to get a iMacs. 1 for my office manager. The problem is me. My office is in the hospital, actualy two. In the AM I'm in one office at a hospital, in the afternoon I'm at the other office in another hospital. So I've thought about buying two Thunderbolt display's for those office's, and use my 2011 i5 1.6 MBA. I don't do a lot that would require the Quad core i5 in the iMacs, but giving the price of some of the refurbs for the 21" which is almost the price of the thunderbolt display is that the best route? Also is there any real diff between the thunderbolt display and the model from last year since they have refurbs for last years model at a decent price? Options: 1. 1 thunderbolt display at each office(2) or last years model of display with my MBA 11. 2. Buy 2 refurb imac's (I think they are the 21" models). Keep MBA of course for travel needs. Any advice. I do love that 27 inch screen but also wonder if it will too much sitting on a desk in front of 1 -2 feet away.