If you do FireTV check out their "Recast" DVR. It's half price right now $129.
That and a decent HD antenna will give you full DVR and live TV capability for over-the-air HD stations. Any recordings or live TV show up in a "DVR" menu you will see on any Fire TV device on your network.
I had been running TiVo for HDTV, but there's no yearly fees with the Recast, and it slots right in to an existing Fire TV setup, where TiVo is it's whole separate thing.