We've used Eero in homes up to 9500 sq. ft. We decided to take a hammer to all of our Luxul about 3-4 years ago when they:

Had a bad batch of 1510s...we had 9 go bad in a VERY short time. They said "We haven't heard of that". Later...problem was acknowledged.

Had a throttling issue with their WiFi controller. We were getting 1/4th the speed with their router, controller, AP solution that we should have. After swapping access points, cables, etc., and MULTIPLE calls with Luxul we ended up swapping for an Eero...BAM. 200+ Mbps down became 800+ Mbps down.

They later acknowledged that there was a throttling issue. It looks like this may have been resolved with a firmware update as clients on Domotz/Luxul that were getting 100+ down now are getting 400+ with the same service speed.

They were always very responsive with their tech support but after having multiple issues on multiple jobs, we pulled a Roberto Duran...NO MAS.