Internet: Telekom VDSL 50 (50 down, 10 up)
LAN Test (Speedtest.net): 47.71 Mbit / s down, 9.48 Up
Powerline ("): 47,70 Mbit / s down, 9.51 Up
Have made several tests, but the result remained (unlike WLAN) always the same!
From me a buy recommendation.
PS: Have a side even on a power strip, with two lamps off (from beauty reasons), yet no loss of speed!