Over the last year or so, I've been working to replace the network equipment in my home with Ubiquity products, and last night I decommissioned my 6th generation Apple AirPort Extreme and replaced it with the UniFi Dream Machine (the non-pro model).
Setting up the Dream Machine is very similar to setting up a new HomePod. All you've got to do is plug it in and download and open the UniFi Network app. Ubiquiti has done a good job of obstracting a lot of the complexitities for non-network nerds. However, should you want to delve deeper into monitoring and managing your UniFi network, the web-based management interface is exceptionally executed and comprehensive.
While the verdict is still out, initial indicators are very good. My wifi speeds have almost doubled, allowing me to take better advantage of the fastest pipes in the west. For those looking for a whole-home, integrated, wifi and router solution, the UniFi Dream Machine is hard to beat.
Update: Apparently, Apple has started selling the Eero mesh wifi system. Ostensibly, and this probably goes without sasying, they're backing the wrong horse.
Update 2: 9to5Mac has a great write-up extolling the Dream Machine's many great features.