I need a new computer, no question. I got the new 13" MBA with 8gb RAM. I love it but I have doubts: It's heavier and bigger than I'd like (I'm a bit of a wimp, commute by transit and foot, and often need to carry a handbag that is less comfortable for weight-bearing than a backpack, and would love to be able to use a broader variety of my bags. I got the 13" because it will be my only computer (I live in a tiny NYC apartment where I have to choose between a guest sofa and space for a monitor) and a lot of the writing that I do would require two documents side by side or a document and a browser window side by side. I am thinking of returning it and replacing it with two used MBA's from ebay, one 13" for home and limited commuting and one 11" for travelling and on the go days. Does anybody do something like this? How does juggling two computers work out? Do you end up just not using the bigger one at all (my worry)? If I did do this, which years/models should I aim for? Reading here, it seems like people are very happy with their 11" 2010 models. Does the same go for the 13"? Would 2gb RAM be sufficient or should I hold out for enhanced models? (I think my main use of RAM is keeping lots of browser tabs and apps open at the same time, which is something I'm pretty dependent on for research and don't see changing. One of the things that made my old (windows, not chosen by me) computer unusable was taking 60+ seconds to switch between apps and browser tabs. My last computer had a 64gb hard drive, and while that got tight I could live with it. I have about 8 days left to return my new MBA if that's the route I choose to go. If I find a sufficiently lucky deal on ebay for an 11in, I could conceivably keep the 13" I've got and add an old 11". That wouldn't be great for my budget but it would be just do-able. But is there any point if I don't really need the newest model? Or are there possible resale benefits I'm not thinking of? At the back of my mind is thinking that possibly a new and more exciting version of the MBA will come out in the next year or two (for me, the most exciting thing would be losing weight), and I'll kick myself if I'm not in a position to benefit from that. Anyway, as an insecure (the last time I bought a new laptop was my ibook G4 in 2004) and slightly neurotic buyer of computers, I'd love to hear people's thoughts. Thanks!