My scheduled install is this Monday am. Should I ask for a particular HD DVR or does it really matter? I have all the necessary cables like HDMI and digital coax as well as toslink for the audio. I have one HD TV to hookup and I have an OTA ant that I use to receive local channels. I live in the Dallas,TX area and DirecTV locals are available in my area. Do I have to have the AM21 tuner to record OTA? Also, is the new SWM LNB something I need or is the 5 LNB ok? Thanks for any input.