I've had the case for about 10 months, and all of the tabs which hold the lower case to the MBA chassis have broken. This is the machine which travels with me, I always carry it in a Timbuk2 messenger bag and am very careful with it. I'm considering an Incipio Feather case, which was my first pick after I bought the MBA but they were out of stock. I've got Feather cases on my 2012 15" MBP, ipad 2 and iphone 5s, and so far so good. For those of you with the Feather on a 13" MBA, what's been your experience with the durability of the Feather?