The high end 2-in-1 notebook market is pretty crowded with entrants from Microsoft, Dell, Lenovo, HP, ASUS and others. As a result, it's pretty tough to make a convertible laptop that stands out from the rest. HP's doing its best, however, with its new Elite Dragonfly line of lightweight, 2-in-1 hybrid PCs. What we have on hand today is the currently-shipping edition of the Elite Dragonfly...