I have had DTV since probably 1998, I recently moved in january and got the whole home dvr using the genie, but I kept two HD DVRs, one of which is the hr21-700. I have used the dual tuner capabilities on this DVR since the feature became available several years ago. At our new house we have had some issues with our system sporadically, DVRs disconecting from the network randomly, losing my dual tuners, and no pic at all in one of my kids rooms, but they all would randomly fix themselves. Well I have been disconnected from the network now for several days and I now only have one tuner available to me in the master BR using the hr-700. I call today and the damn CSR on the line tells me that the HR21-700 does not have dual tuner capabilities and that he doesnt know what i was doing to make it work, but it is not supported....... HUH. I assured him I used the feature for 5 years.. hell probably longer, and that it is in fact a feature on this DVR. Anyways, a tech is coming out in a few days. i love DTV, but when the CSR person shows how little they know about the equipment, they lose massive credibility. Just pisses me off that tey tell me something that is absolutley false.