TP-Link RE505X Review: Turn your router into a mesh system
Amazon.com: TP-Link AC1200 Gigabit WiFi Router (Archer A6) - 5GHz Dual Band Mu-MIMO Wireless Internet Router, Supports Guest WiFi and AP mode, Long Range Coverage : Electronics
TP-Link TP Link AC1750 Dual Band Wireless Range Extender in the Wi-Fi Extenders department at Lowes.com