[legooolas]

I've been running it (or an equivalent ethernet-over-power from another vendor) for years and streaming HD TV over it with no problems.

RF spewing out of the mains wiring is true, but again I've not had any obvious problems due to this. (I'm surprised that they're allowed to be used despite this, however)

edit: Streaming TV over it in that I use it to connect between a MythTV front and back-end, and haven't had any connection or bandwidth issues that I've noticed. It's been pretty rock-solid for me :)

[gambiting]

I've tried multiple different HomePlug adapters at home, mostly to stream Steam games from my PC upstairs to my TV in the living room, and after a few months decided it's just not worth it - sure, "tested" speed is always very high. But when you need to stream 1080p@60fps with minimal latency, it's suddenly not so good. The latency tends to go up and down randomly, frames get dropped, it's just a bad experience. I'm sure it's absolutely fine for browsing internet/watching netflix, but local streaming is impossible - I just have a 30m long ethernet cable running down the stairs nowadays, the connection is always perfect that way.

[legooolas]

I've been using it on some cheap ethernet-over-power adapters (Devolo, not "HomePlug" brand) for streaming MythTV recordings of HD UK TV for several years and it's been completely fine.

UK Freeview HD is 1080i though, but it's in a very bandwidth-inefficient container as it's just the transport stream which is sent over the network. I've also played some 1080p content over it with no problem, but most of the content I use is 1080i.

No idea how old my wiring is (house is from 1950), and this is across the distribution board / fuse box too, as it's between upstairs and downstairs in my house. So my experience is completely different to yours and much more positive :)