Best Mesh WiFi System


Is anyone using a mesh Wifi system they are really happy with.  It will be used in a rather large house so I'll probably need main unit and two sattelites.  Thanks,
doni
Don't care about best. I've been using Tp-Link Deco M5 1300 for about 5 years. Started with four for ~$200 and added 2 more refurbished for $80 to put one out in the shed. The ones in the basement, upstairs office, main floor back hifi and outdoor shed all have Ethernet connections. The fifth is rock solid wifi to the front doorbell cam and the sixth is a spare.
We have WiFi calling and it is solid everywhere.
Not sure about best, but this one solved all my problems with coverage in a house with thick plaster walls and even reaches outside to my deck:

https://amplifi.com/amplifi-hd


Netgear Orbi Mesh - although just like other routers, instead of a clear "best" there are probably several brands/models that would meet your needs.  As in the past, what works well now may eventually need replaced as technology develops further.

The Orbi system works great for me. Although my main server is hardwired, my garage/outdoor system is connected directly to one of the mesh satellites by a very short CAT8 cable and it works perfectly plus gives me enough range to control the server from my iPad while on the porch or the patio. 
So far 4 different systems.
Best value?
Depends on how good a shopper you are.
Best coverage?
Good luck finding anyone here that has compared.
Best form form factor?
Only you know what you like.
All you know for sure is that everyone is happy.
Go for it.