Vaja's new Leather Agenda folio case for the iPad 2 ($220) follows in the same tradition as many of its previous models. The beautiful-looking body is composed of top-quality floater leather -- the best-feeling stuff around -- and a hard reinforced back shell holds the iPad 2 in place. As is typical, the coverage is less than ideal; the bottom edge of the tablet is exposed, along with the top and the left corner from the camera over, and the front…