TP-Link Deco M5 for $153.23 (after the $20 coupon), great bang for the buck.
Plus get 15% back if you have a Prime Credit Card.
Some highlights I like about this system:
1. Coverage is up to 5500 sqFt (stretching it) but can easily give a strong signal upto 4000 sqFt
2. Built in Antivirus protection
3. Decent parental controls. Best for the price.
https://www.amazon.com/TP-Link-De…way&sr=8-1