I am thinking about replacing my 2008 MBP with the new MBA that is coming in a few weeks. The only thing that concerns me is that I have grown very used to having 8G RAM and don't think I could go back to 4G. First, how do people with only 4G survive?? Is it possible the new MBA would support 8G? From what I understand the RAM is soldered on the logic board, so it would have to come that way, and 8G RAM seems VERY VERY expensive right now.