The rooCASE Oragami Case seems to be currently at or near the top of the cases, the big advantage of this case being the number and variations of orientations, including both portrait and landscape, and at the price point, is hard to beat. The oragami cover is ingenious, you can fold it up all sorts of ways, the iPad Air has a lot of applications that fairly beg for portrait orientation (reading a book, newspaper, etc.). The conventional Apple case supports only landscape, as do a number of compSee full review