Just had Comcast install a CableCard in my new Tivo today, and have not yet disconnected the old Tivo from DirecTV. I am now watching the Sabres-Bruins game on Center Ice simultaneously on both, for a direct comparison. Even though both transmissions are SD, the DirecTV picture is much better. Hope I didn't make the wrong decision.
I wanted to see the Caps game in HD which is not available on the old satellite Tivo, and just couldn't bear to give up Tivo for the new DTV box.