My current setup consists of a DirecTV HR22 DVR connected with two coaxial inputs, a DirecTV H21 HD receiver, and 3 SD receivers. I installed an OTA for the digital stations not supplied over the satellite and am considering purchasing the AM21 to add those channels to the DVR. Also, I am considering replacing the H21 with another HR22 DVR. I've got a 3LNB slimline (oval shaped) dish with two cables going to the switch. Before I go out and buy a mile of coaxial cable, connectors, etc., to make those changes would it be easier (and cleaner) to replace the switch with the SWM8 switch? From what I've read on these boards, it sounds like that may be the best approach. I would rather do it myself than call DirecTV and cross my fingers that the installer who shows up will install things the way I want them done. Any input?