We moved into a rather large house (~4200sqft) earlier in the year and I went with Orbi and got the higher end models for the dedicated backhaul channels:
https://www.netgear.com/orbi/rbk53s.aspx
I got it in June on sale from Costco for $300 which I think at the time was decent. I have been very happy with it. Any device registers the same quality on speedtests whether it is hardwired to the base unit or using wifi from a satellite. I like that the base unit has 3 ethernet ports and the satellites have 4, so I can at least eliminate wifi on essential items.
Since moving, we ditched cable and do a lot of streaming including over the network using Plex and I have never had issues with multiple streams going at a time.