Posted in the pub thread that was discussing a similar issue.
Well, just ordered a new antenna which I will mount on the roof using the old Directv mounting pad, some wire, a signal amp, and the tivo roamio. I figure Ill give it a try on the bedroom tv and see how it goes from there. If it is all acceptable, ill order at least one more tivo and drop sat service.
You could also get an HD Homerun and attach it to a dedicated PC with HDMI output. Windows Media Center works great as a DVR and there are no Tivo fees. I briefly tried out a Tivo Series 3, and while the scheduling features were nice, the GUI was not in HD and it felt like buying into old technology. I got an HD Homerun, Hd Homerun Prime and now I have 5 tuners and I'm very happy with the setup. Saving a buttload of money too. You can also access the content on any other PC or phone in your network, and there is a Roku app now, too.