HP Envy x2
The whole point of a tablet is that the keyboard is optional -- and the HP Envy x2 lineup takes this philosophy to heart. The screen is the actual PC; dock and undock it from its keyboard dock to use it as a full-blown laptop (3.1 lb. when docked) or as a standalone tablet (1.5 lb.). The Envy sports a 1.8GHz dual-core Intel Atom processor and 64GB of SSD storage, with an 11.6-in., 1366 x 768 display that includes a stylus for writing or drawing.
Other goodies include Beats Audio, NFC support, and dual webcams: a front-facing camera with 1080p HD video and an 8-megapixel rear-facing camera.