I've finally decided to take the DVR plunge and will be purchasing an HR24. I will only have the one DVR with no plans for additional tuners in the future. I can only run one wire from my satellite dish to the interior of my apartment, so I will be buying an SWM LNB for my slimline dish, as well. My questions - do I need a power inserter and a two-way splitter, or will a power inserter suffice? And which power inserter do I need (PI-21 or PI-29)?