I just got my DTV reconnected after trying cable for 2 months and for my non HD TV they provided an R16-300 DVR. First question is, can I program 30 second skip into it? I was always able to program my previous unit which was a Phillips TIVO. Secondly, how do you swap the two tuners? Does it lack Double Play buffering? Besides recording one is there a workaround or do I have to wait like we did with original HR21-xxx boxes?