I'm waiting for DirecTV to change policy. They only allow one Genie per contract/house. I read recently that they may change that policy soon. If they do, I'll be installing a Genie in my MH. I like that they are faster, smaller and obviously can record more shows at once.
I think for those that have the account just for their MH, the Genie would solve some issues by allowing a second wireless connection in some of the older motor homes that aren't set up with HDMI.