Got 3 TP-Link 200 Mbit ones and 2 Devolo 200 Mbit ones and they interoperate perfectly.
Have 1 TP-Link in the lounge with a switch plugged into it and then a PS3, a Wii and a laptop for media usage all going into the switch. Have 1 devolo in the boiler cupboard along with the router (this is where the master socket is) and that just plugs into the router.
Then there is 1 in each of the 3 bedrooms.
The whole thing works flawlessly, I can stream on the PS3 from a NAS connected directly to the router, everyything sees everything else (I find this amazing when you consider all the traffic has to go through the single Devolo adaptor plugged into the router) and on sustained transfer between any device on the network, I see between 6 and 7 MB/s (depending on what else is going on), which I work out to be between 48 Mb/s and 56 Mb/s.
Perhaps its because I live in a single storey flat that is less than 5 years old, but I couldn't be more impressed with the tech.
Aside from ensuring none of them are plugged into a surge protector (I didn't even consider that one, it seemed pretty obvious), we really haven't done anything special. Wherever possible, we have given an adaptor its own socket, but even that hasn't been possible everywhere, like the one that plugs into the router, which is on a 4 way extension!
Whether I would see as good performance if I lived in a normal house with perhaps slightly older wiring, I imagine not. But in the right conditions they are such a superior option to WiFi (what we were using before) it's untrue!
