I held off on buying a machine when I heard MS was doing the Surface. I figured they'd nail the convertible tablet - it's not that hard. When they announced, I thought the specs were terrible, but hey maybe I could live with it. Then it became clear the keyboards were crap, and you couldn't actually use them as laptops, I laughed and got another ThinkPad.

Windows as a touch device has sucked forever. I know this having used convertibles in 2005. It's great when it works, but you better have a keyboard nearby. MS has done effectively nothing to make touch/pen really outstanding on Windows. Apart from their terrible Metro apps approach.

Surface Book looks great from the waist up. If Lenovo made a $500 adapter that let me slap an X201-style bottom on it, I'd buy one in a heartbeat.