Well, I've just read through this entire thread, and it's got me interested in an upgrade to our home's WiFi infrastructure. I switched off of Ubiquiti some time ago, and currently have four CBW APs (three 240ACs in the house, a 140AC in the garage). We don't have a large number of WiFi devices (2 mobile phones, four laptops, a few IoT-like things), as I've tried hard to use wired connections everywhere I could.
Our home is wood-framed (built in 1920) and two living levels plus attic and unfinished basement (and there are WiFi devices in the basement). It's 1000 sq ft per level, relatively square floors, and there are some plaster-and-lath walls although most walls are drywall. There is a brick chimney nearly in the center of the house (unfortunately) which extends from the basement floor to the bottom side of the second floor.
Right now I've got an AP in the center of the attic ceiling to provide coverage to the second floor, and two APs on the first floor ceiling (midway between the center and corner of the house, on diagonally opposite corners) to provide coverage to the first floor and basement.
The reason I'm thinking of making a change is that we're heavily dependent on WiFi calling in this house; our phones use the T-Mobile network, but due to topography issues T-Mobile LTE/5G coverage at our house is weak on its best day, and unusable on most days. Most of our WiFi calls are OK, but frequently we have one-way-audio issues or other weirdness that we don't experience wen using WiFi calling in other locations. I'm fairly certain this not the fault of the router or uplink (EdgeRouter 4 connected to FIOS ONT via Gigabit Ethernet), but could be wrong
I'm trying to figure out what a decent combination of Ruckus APs would be here; I could easily put an R710 in the attic and that would probably cover most of the house, except for the shadows created by the chimney underneath it. I could also easily replace the first floor APs in their current locations, although given the Ruckus APs' better coverage that seems like overkill.
I'm planning on using Unleashed to manage them, which is nearly the same situation as the CBWs, and will probably get an R510 for the garage.
Finally, while we're not in an apartment, we are surrounded by houses of similar size and so there is a lot of WiFi interference; every house has 2-4 SSIDs being broadcast on both bands.
I'm open to any suggestions as to how to improve the situation here. Thanks in advance for your guidance (this forum was immensely useful in my wired network upgrade, which resulted in a 4-unit stack of ICX 7150-C12Ps replacing EdgeSwitches, and which are working fabulously).