My wife is a teacher and a graduate student. She will mainly be using it for research and typing documents. She often has several tabs open at a time, is on Blackboard, and might be typing a document at the same time. We are looking to replace our 7 year-old Toshiba laptop. It's pretty slow and bulky compared to laptops available now. We are looking for something portable (11-13"), light, and with a SSD. I had some questions: 1) I'm sure 4GB RAM will do, but in case we want to use it for more in the future, is a 6GB MBA even available? 2) How is the screen after long use (being non-Retina and only 11")? Sometimes she is up typing and researching until midnight or later. Would the retina be much easier on the eyes? 3) best place to buy it? (Best Buy, Apple store). I think Best Buy still has interest-free financing for 18 months. That sounds appealing right now as Christmas is around the corner, we are paying for her grad. school, etc. However, I believe Apple has no restocking fee whereas BB does. 4) We have not used Apple OS on a computer. We have iphones and an ipad. Will the adjustment take very long from Windows to Apple's OS? 5) any other important factors you all can think of? Does the 11" MBA sound fitting? Thanks in advance!