Linksys' RE9000 MU-MIMO Range Extender is a tri-band extender that provides four-stream backhaul for a surprisingly low price.
Router, Extender or Wi-Fi System? Here's how to choose.
NETGEAR's EX8000 Nighthawk X6S Tri-Band WiFi Range Extender is a big, but pricey, step forward in Wi-Fi extender design.
Arris' SBX-AC1200P SURFboard Wireless Network Extender with RipCurrent is a nice little powerline-connected Wi-Fi extender, but trapped in a G.hn world.
There's a lot to like about Linksys's RE6700 AC1200 AMPLIFY Dual-Band Wi-Fi Range Extender.