On Demand question

We bought the ones that D* sells and they work very good.

The powerline ones directv sells work fine for VOD. They might not work very well for multi room viewing. Depends a lot on how well they work in your home.

The "85Mb/s" should be taken with a grain of salt. You'd get something near that speed if both units were plugged into the same outlet and you sent data using a protocol that the directv boxes dont use.

Realistically, you'll get somewhere between 10-15 and 20-30Mb/s of throughput, and it may or may not be variable/inconsistent based on interference and other issues.