I'm getting rid of an HR-22 for the tivo HHR?? whatever it is, can't hook it up for some reason so they are sending an installer. Some questions: Will the tivo be faster than the Hr22-100 as far as the guide and recordings? That's really my goal here. I would have stayed on the whole home if the rep could guarantee me an HR25 but she couldn't. Other than whole home and 3d, what will i be missing with the tivo powered unit?