I bought a Lenovo Yoga 2 and, until recently I would have advised you to avoid like the proverbial. It would regularly crash, wouldn't wake up and other annoying things. Then two weeks ago there was a firmware update and now it works perfectly and I love it. Good screen, great sound, fabulous battery life and the built in stand is really useful. The disadvantages are that the Atom processor isn't a screamer, there isn't a Lollypop update available (yet?) and the bulge sometimes makes it awkward to use in portrait. If you do get one then replace the Lenovo launcher with something better like Google Now.