I sold my 27″ iMac primary computer for a 13″ Macbook Air in June 2012. I’ve been using my MBA as my primary computer since then (I add a 24″ screen when at home). I feel confident that what I have been feeling since I made the switch is not going to change: The MBA is the best computer I have ever owned.
Although this is not entirely true. Stepping back there is no question that my iPhone5 is the best computer I have ever owned. I’ve had it over 6 months and it still surprises me. While it’s my primary “away from keyboard” device and compliments my primary computer extremely well, it’s not where I do most of my work. My iPhone5 is the nail-set to my hammer.
And what a hammer the MBA is! Not only is it built extremely well, it’s fantastically light which makes taking it on client-site days is a breeze. The display is the best non-retina screen you can get from Apple, and its SSD makes it shockingly quick, even after running it continuously for 9 months.
It’s totally fine running a dozen programs (including Photoshop) and dozens of browser tabs simultaneously and even moderate video editing is quite bearable. It’s a great computer, period.