TRENDnet's TPL-430APK WiFi Everywhere Powerline 1200 AV2 Wireless Kit is an inexpensive way to light up a Wi-Fi dead spot with surprisingly good throughput.
NETGEAR's R8000P Nighthawk X6S Tri-Band WiFi Router is a redesign of NETGEAR's tri-radio router, adding MU-MIMO and improved storage performance.
Linksys' EA9300 Max-Stream AC4000 Tri-Band Wi-Fi Router tries to spiff up the 3x3 "tri-band" router market with higher link rates, MU-MIMO and a much more powerful CPU.
ASUS' GT-AC5300 Wireless-AC5300 Tri-Band Gigabit Router is a slightly beefed-up version of its RT-AC5300 predecessor.
Updated - NETGEAR's R7000P Nighthawk Smart WiFi Router with MU-MIMO is the company's attempt to lure you away from the Nighthawk that started it all.