My parents have been complaining about Wifi access through their 2400 sq foot house. Its a brick ranch with thick walls. They used to have a Buffalo WZR-HP-G300NH router located in the center of their house and even though it did do a great job it did enough. When it died I gave them an old DLink DIR860 but it keeps dropping and won't provide strong wifi through the rest of the house. They have Verizon 100 / 100 or 150 /150 not sure, and my nephews and sister have moved in and like to stream / games, etc. I was thinking of getting them a mesh system like the Ampli HD or maybe 2 ac86U's and try to setup an AIMesh system. Do these sound like good options, are there better ones? Would a good single router be a better idea? The router will be located in the center of the house, and there is a room over the garage which always seems to have bad wifi service.