The newer G.hn powerline stuff is pretty great. I initially tried to run an ethernet cable from an AP in my second-floor office to the router in the basement, but it had to go through what used to be an exterior wall so it ended up being impossible (without making big holes which I wasn't willing to do). I tried Ethernet over coax but never got that to work either. Then I got a pair of G.hn adapters and they've fit the bill perfectly. Absolutely rock solid (literally had more issues with the fiber to the house), good speeds, etc. Anybody scared off by older powerline standards/implementations should give the newer ones a try.
