If you've got less square footage (or don't need top speeds everywhere), want to spend less money, and want something really easy to set up, try Ubiquiti AmpliFi. Here's Troy's writeup on that: https://www.troyhunt.com/how-i-finally-fixed-my-parents-dodg...
Personally, I am amply served by a quad-core HP thin client ($70 on eBay) running pfSense (w/ Intel server NIC, $25 on eBay) and a Ubiquiti UniFi UAP-AC-LR ($75-90 used on eBay). My living space is 1500 sqft. Internet speed is 150Mb/s up and down, and I get that speed of WiFi nearly all over the house. Total cost was less than $200.