For single unit's I think they have Pace and Motorola Models, if you are thinking Multi-room HD-DVR I think the only setup they have for that is the Pace Denali set up with a J-hawk.
I have the multi-room setup and it actually works pretty well. No major issues but I have seen that if service is out then the DVR doesn't work to even play pre-recorded shows. But that has only happened once in the ~8 months I've had my multi-room setup.
