Has worked great for us ~2000 sq.ft, but we've moved to another system.
$95 OBO
From the manufacturer:
AC2900 Dual Band Gigabit WiFi Gaming Router with MU-MIMO, AiMesh for mesh wifi system, AiProtection network security by Trend Micro, WTFast game accelerator and Adaptive QoS
Dual-band (2.4 + 5 GHz) AC2900 wireless router with the latest 802.11ac MU-MIMO technology for data transfer speeds up to 2900 Mbps
1.8GHz 64bit Dual-Core processor optimizes network traffic and connectivity speeds from the USB 3.1 Gen1 and 4x Gigabit LAN ports
Designed for lag-free online gaming and flawless 4K UHD streaming with WTFast® Game Accelerator and Adaptive QoS
AiProtection Powered by Trend Micro™provides built-in 24/7 protection from external attacks and threats, neutralizing them before they reach your network or connected devices
Manage your network with the ASUS Router app– setup your network, manage usage and parental controls, even get instant notifications about important network-based events
AiMesh Supported - Connect to other compatible ASUS routers to create a powerful and flexible whole-home Wi-Fi network