I was talking to a colleague in the A/V business yesterday, and he told me he had his first run-in with the newer slimline 5-LNB dish, which now supports single-line distribution through an 1 x 8 switch! His understanding is that the HR21s are the only model to support the single line support of both tuners. Also, no need for those pesky b-band converters. So, seems like moving forward we don't have to worry as much about having two cables available for the DVRs. One downside, though, is that there is only a 1 x 8 switch available right now, so no way to go to the 9th receiver. BTW, if anyone has more info or confirmation of this info, please post it!