I tell you about my experience installing my zigbee network with Hubitat.
I installed a 3-story house with a C-7 and at first when I only had the ground floor and the ground floor working, everything worked relatively well, but the problem started when I started installing devices on the 1st floor, that's where my problem started, I had two repeater devices that reached me upstairs with cosin and out in 1, but when I refresh the zigbee children's page the costs varied, after a while it had a delay and sometimes it didn't turn on one and even though I installed 4 repeaters on floor 1.
My conclusion is that these Hubs with 50 aggregate devices and that they are not more than one jump away work excellent.
My solution and what I offer to clients is to install a Hubitat Hub for each floor and choose to create several mesh networks with the Hub.
I have 4 hubs in a 2 floor home. I've split the area into "Upstairs", "Downstairs" and "Front".
"Front" received some of the devices that were originally on Upstairs and Downstairs when I noticed that there were a lot of devices that were in the front 1/3 of the home. Then there was a 5 ft gap, and all the rest of the devices in the back 2/3 and out to the back and the pool area.
I have a 4th hub just for Internet facing devices: Weather, Google, Alexa, plus LAN devices: Lifx, Shelly, Homebridge, etc.
Most people will use Hub Mesh these days but I still love that Hub Connect.
It's very very stable. I've shot myself a few times over the years but that Drawing was created when the two hubs on the left were C-4's then a C-5 and the right most one was a C-3, my original hub purchase. They are now two C-8's and two C-7's. The C-4 (with Zigbee) to C-8 upgrade was done right when the C-8 arrived. Worked well so I got a second and I'll pause buying for a bit
From my system's viewpoint, I don't care if a device is ZWave, Zigbee or WiFi. Once they connect, they are just devices. I pick device then look at it's communications. It's why I have Zigbee at all. I needed Canopy mount Fan Controllers and that existed in Zigbee only. Which led to repeaters for the darn things. Then I tried Zigbee Motion sensors and indeed they are faster.
