I've had a couple of Unifi APs for a while now.

I do like them generally and they do give me good coverage over the whole of our house. I don't use the "zero hand off" (ZHO) roaming as the standard roaming works well enough for everything other than Skype.

They aren't perfect though, one of my two APs stops responding on wifi occasionally and I have to restart it.

I have recommended them to other people though and everyone I know who bought them are generally happy.

Our house is about 80 feet end-to-end, two stories with plenty of internal brick walls. I have one on in the ceiling void on the ground floor at one end and the other in an attic at the other end. They cover the whole house very well and also provide decent coverage in the garden within about 40 feet of the house.

I have mine setup without ZHO, so a single ssid but different channels on each AP.

Mine are a pair of the UAP AP-PRO model

https://www.ubnt.com/unifi/unifi-ap/