OK, I have one HR20 right now, along with an HR10-250, taking care of my HD needs for the time being. I also have a couple of SD DirecTivos. All of my DVRs are in the same room, hooked up to the same TV (plus I distribute the signals via a channel modulatore to other rooms in the house). If I wind up replacing my SD boxes, I'll probably wind up with HR20s - and my understanding is that you can only have two of them in a room together (does that mean that they have two different IR codesets, or is that accomplished via RF? - RF is not something I would want to have to use - I control everything via a Harmony remote right now, and I'm satisfied with it). So my question is - could DirecTV send down an update that would allow the HR20 to respond to different codesets? That is one cool thing with these Tivos - I think there are something like 9 different codes to choose from (the Sony models only had 3 I think).