In practice, only on my circuit I got very decent speeds between my PC and media player, similar to the ethernet 100 with 10mb / s.
As against this I had to unplug my CPL Freebox who not only have stifled the flow of LEA (Between 3 and 4 MB / s) but above all do even more left to spend the Freebox TV on the player.
Brief reference, not for the quality of the product (which is at the top CPL) but simply because it does not work with me. Too bad.