Another option, if you still have your old 655 routers, put them to good use. Turn them into APs. It works. I would be careful in wifi congested areas though. If your not in this area, then having additional APs will work well. I have 4 coming off my host router. 2 broadcasting 5Ghz and 2 doing 2.4Ghz along with the host router. Each frequency using the same SSID and PW, just different channels. My 2 cents.