I currently have an HR20-100 and an HR20-700 in the Home Theater Room, along with a Slingbox. I control the HR20-700 via my Harmony 880 universal remote. Since this box is in IR mode I can also use my Slingbox for that box. The HR20-100 is in RF mode. When using it in IR mode, there was a lot of conflict between the two boxes . The installers, DTV tech support, and I all tried different set-ups and I could not find anything better then the RF/IR environment mentioned above All DTV boxes are in a cabinet with glass front. Oddly enough the HR20-100 in RF mode, has the most issues. You have to aim at the box to get proper response. I tried 3 HR20-100's and this was the best box out of all of them. While my setup is okay, I was wondering if anybody has a different approach. Right now I have the Harmony remote sitting next to a DTV remote for the RF HR20-100. Oddly enough, that boxes remote does not recognize my Yamaha receiver, even though the HR20-700's DTV remote found it well. Now I switch back an forth between remotes, but I always am tied to the Harmony remote for volume control. Any thoughts? Anybody experiencing the same issues with the remote set in RF? I appreciate any help or suggestions.