I currently have an HR44 and four HR24s. That configuration has worked well for me for several years. I now need to add an additional device, I prefer to add another HR24. At this point cost would be my most important consideration. Where should I go to obtain that device, Directv?, Third Party or try to reactivate one that my son has and was not required to return when it was replaced. Coax is already run to the switch so I assume little more to do than install and activate? How should I proceed?