I plan to cut the cord later this year with the help of one of these next generation DVR boxes. What makes these different is that they have no video output at all. They are networked devices that allow you to control and watch TV on Roku, Apple TV, iOS, Android and a variety of other devices. I am leaning toward the four tuner Tablo for $400 (including lifetime guide subscription).
http://www.tablotv.com/
https://www.simple.tv/
http://www.tablotv.com/
https://www.simple.tv/