Have been keeping an eye on these for the last six months or so and this is the cheapest they've been by about $50. Not a heap of info about them as they're still very new but they seem to get rave reviews with the only negative comments being about how short the USB cable is and how long they take to arrive (up to 25 business days). So tempted!
YouTube review here: https://youtu.be/s5eV1cjOn4Q
4k at 15"?