Hi all, I have a pleasant problem, my office is forcing me to upgrade one of my computers. I don't know which to choose. I currently have a MBA (1.8 core 2 duo 4GB RAM) and 2009 or so iMac. Both are working totally fine for me, but I am required to chose one. Which would get me the most bang? I use my MBA so much more, and battery life is my only complaint (about 3 hours of real world, heavy use). I played with the new air recently a bit, seemed pretty similar in terms of speed, etc. I mostly use web, video watching, office and productivity software, photo management. I could also consider the 13" rmbp although I would need to add some money from elsewhere for that (not a big deal). Or I could get the new iMac, which i probably a bigger boost performance wise (there i do my more cpu intensive work), but I just don't use it as often. I could also pay to have my MBA battery replaced. Would that see an improvement? Any suggestions welcome!