I currently have two 500 AV Wireless + and two 500 installed duo + in a network and am satisfied with the reliability and functionality. My network consists of routers, 2 Mac computers, a NAS server and an internet-enabled TV. The transmission speeds are more than adequate and even if I with all computers and the television on the internet serve, there are no problems, even if I download a movie about a Madiathek and a post on YouTube and watch a movie from the Internet. For the 500 series, I decided, because I did not want to lose the outlet usage. I have all WLAN activity, including that of the router disabled. When I use my iPad I activate the Wi-Fi enabled devolo in the room where I am staying and the iPad use. Disabled after use we the WLAN at devolo. Soon comes a new devolo to as a second TV is connected to the network. This I guarantee a high level of safety in my network.