eero was my first stop after deciding to abandon my all-Apple Airport setup. I had several base stations throughout the house with middling luck, so it was time to move on, especially when I realized Apple wasn't going to update the line.
I got the eero system, happy for the Apple-like look and interface. Long story short, results in my 2-story house were disappointing. The area most needing the reach barely got a signal, even after I bought two additional satellites to try to daisy chain, as it were.
Flash forward; now have a Netgear orbi system and we couldn't be happier. The dedicated backhaul channel is the key; we have several base stations throughout the house and each computer that is near one is hardwired to the backhaul via
ethernet gets speeds equivalent to or near the base station's speed. (e.g., the base station, hardwired to the AppleTV, shows 355 Mbps; my office Mac (which has an orbi satellite, which is itself wired to my Mac via ethernet) shows 350 Mbps. Wifi speeds remain great throughout the property, though not as fast as the backhaul of course.
Again; loved the eero, its look and feel and implementation were very Apple-esque. And I know a few people who have them and are very happy with them.
All said, however, and based on my own experience and expenditures, I'd recommend bypassing the eero and going with the orbi. As always, your mileage may vary.