I've got a Late 2010 MBAir, 4 GB, 256 GB SSD, 13". This device gets used about 14-16 hours/day, and has traveled all over the planet with me - Brazil, Portugal

I've got a Late 2010 MBAir, 4 GB, 256 GB SSD, 13". This device gets used about 14-16 hours/day, and has traveled all over the planet with me - Brazil, Portugal, UK, Luxembourg, Germany, Singapore, .... It's a little bumped up (I just toss it into my backpack) - but don't really feel any need to upgrade this year. I'm holding out for 802.11ac, 16 GB, 512GB SSD < $1400. Retina holds no value for me (personally - I know there are people who love it) - in fact, I'd probably pay $100 extra for non-retina if it would give me another couple hours of battery life. I think all the stars are aligning for that MBAir to land in mind-late 2014 - I can see sticking with that laptop for five+ years.