I have a HR22-100 that I would like to upgrade to a newer HD-DVR (not Genie). The whole system was installed years ago, dual coax to B-band convertors into the DVR. What options are available that would not require a new dish? I do not want to get locked into another 1-2 years as I will be moving, but just cannot stand the slow, laggy behaviour of the HR22 compared to the newer DVR's. Thanks.