FWIW, my brother uses* (and I have used, briefly) a non-thinkpad Yoga daily, and it's a very nice machine. He's had it since ~August 2013. Like any device I could come up with complaints about it, but nothing really springs to mind. It seemed to be responsive, light, mechanically well-designed, and sports one of Lenovo's awesome warranrties.

*based on the context of this thread, I should mention that while he is a technical person, he runs Windows and does not attempt to run linux or anything else natively.