A short update on the TiVo Bolt I mentioned earlier, and not to hijack this thread. I did buy one (the only one that the local Best Buy had in stock, a 500GB version, and it wasn't even on the shelf - it was 20 feet off the floor along with overstock) on Sunday, but did not hook it up until late that day. I have an amplified Winegard HD antenna and also every channel Comcrap offers via unadvertised deal, and a 10-year-old Sony Bravia HDTV; I hooked up the Winegard first, then the cable - it's one or the other with the TiVo, but I do keep the Winegard connected to the back of the HDTV. My only gripe with my former Roamio was that OTA didn't look as good going through it as when it's connected directly to the HDTV.
Two words, and two more words: Holy crap! Get one!
The Bolt's OTA passthrough looks as good now as a direct connection to the HDTV. Comcast's programming looks so much better now - the Gaussian Blur effect is gone, and football/futbol both look really, really good! I'll connect the Bolt to one of my 4k displays next weekend if I have time and see what the picture looks like. The curated channel skipping is sweet! The Roamio will be on CL soon!