Too complex to beat their easy-to-use competition (e.g. Google WiFi) and too simple to beat their feature rich competition (themselves in Unifi, Orbi, Asus, etc). Essentially the worst of both worlds. Plus the price is high without justification.
Why would I recommend AmpliFi over any of the half dozen alternatives on the market? Reality is that I simply wouldn't, and this coming from someone who loves Unifi/EdgeMax.
They also shipped a clearly not-ready product which took months to patch, not cool.
I had one of the early models of the AmpliFi. It was generally pretty solid. We have a really old house with a lot of brick and plaster and it did well at filling the house with wifi when other routers came up short. We got gigabit internet and it just sort of collapsed. I think newer versions are better equipped for that speed but ours couldn't seem to get past 100 mbps.
I thought their support was really good though. The main issue I have with it is that, for some reason, they were unable to identify my model number as being an older version that didn't support gigabit. They were super helpful but could have saved us both some time if they just paid closer attention to the model number.
I opted for the Netgear Orbi; good reviews and satellites capable of up to ~800 mbps in ideal situations.