I have a Arris DG1670 router with wifi provided by my cable ISP in my office downstairs. The range of the wifi does not meet my needs. I ran a LAN connection from the ISP provided router to another router upstairs. This improved my wifi upstairs (on a different wifi channel) but it is still not as good as I would hope. My ISP provides 117 Mbps download and 12 Mbps upload speeds. I built the house so I have cat5 in every room. I'm thinking of putting in a devise to expand the strength and range of the wifi signal throughout the house and into the yard. Since I can connect a LAN from the back of my ISP provided router to a devise anywhere in my house, I was thinking a unit that extends wifi from a LAN connection would be better than from a wifi signal. This logic is correct, right? Anyway, would a Wireless Range Extender or AP be a better fit for me. My goal is to increase the range and strength of my wifi in my house and outside. Thanks!