I have two of the latest gen of Airport Extremes (one is an extension of the other), and they have worked okay, but with all the streaming I do now from Plex, it just isn't fast enough, nor is the coverage strong enough. I have a small house, but need a wifi signal to go through a wall or two. The big thing is streaming media, which frequently buffers now using the airport extreme AC band. Any recommendations on good quality routers? My modem is bridged, so I handle PPPoE (and everything else) on my airport.