I've had my Rev. A 1.6/80HDD for 10 months now. I'm thinking of selling this on ebay and buying a refurbished Rev. C 2.13/128SSD from Apple ($1549.00). I'm not a power MAC user and primarily use my MBA to surf the web, email, etc. I'm just wondering if I'm wasting money to do this type of thing or will I notice a difference between the 2 different MBAs, even with my lighter use. My Rev. A is in like-new condition by the way. When I bought my Rev. A, I had windows xp and parallels installed. I would not do that again on another MBA as I hardly use xp now and it eats a pretty good chunk of HDD space. This was my first mac and though I'm not a power user yet, I feel very comfortable in 10 months to not feel the need to have that MS product on the next MBA. I would appreciate any thoughts on whether my proposed switch makes sense or not based on how I use my current MBA and what a refurb Rev. C will cost. Thanks for your thoughts!