The Rockspace AC 2100 Tri-Band Whole Home Mesh Wi-Fi System usually sells for $300, but you can get it for $200 right now if you check the coupon on the product page. The deal should run through May 20, or while supplies last.
This mesh router uses a trio of black, cube-shaped satellites and achieves speed up to 2,100Mbps using MU-MIMO technology. Rockspace says this system can cover about 6,000 square feet. Like any mesh router, it gives you a single SSID for your whole home (that's the downside of most Wi-Fi extenders -- SSIDs that change depending upon where you are in the house) and is easy to set up and configure via a mobile app. The tri-band system give you both 2.4 and 5GHz networks, and can be expanded to include a total of six satellites for better coverage.