I'm hanging onto my HR10-250 tivo/hd dvr because I like how fast it changes the channel and the dual channel buffer. I do have HR21 and it has it's benefits as well. My question is, I notice the quality of the tv on the HR10-250 is like standard def, even though it's plugged into a 1080i HD 32" LCD tv. Do I need those B band connectors that are hanging off my HR20 unit, as I notice I can't even get some HD channels on the HR10-250 unit. it's been a long time since I thought about it, but just had the guy come over who replaced my dish and I forgot to ask him. thanks!