TP-Link Deco X20 AX1800 Wireless Dual-Band Gigabit Mesh Wi-Fi System (3-Pack)

I have a fiber connection to my network service provider which has been rock-solid and trouble-free. I also have wired ethernet throughout my home. The wired ethernet is great, but my network has grown to be rather complex. I live in a congested urban enviroment where there seems to be an arms race for airspace and I have a lot of IOT/'smart'/HomeKit devices in my house. There are dead spots in my home and the reliability of my HomeKit devices has suffered. I could have simply used the Deco as my wireless access point, but I decided to go all in and replace my Archer A9 completely. I realized I was in for a major hassle reprogramming all my smart devices, but I would take the opportunity to upgrade the security of my network. I chose the X20 because I can use my ethernet network to handle the backhaul traffic. HomeKit devices use 2.4Ghz exclusively due to its range. There are copious videos that encourage you to set up a separate 2.4Ghz network for these devices (which causes its own problems) or jump through other hoops, or even those that say that HomeKit devices don't work well on a mesh network. I can report that the default setup of the Decos which use a joint 2.4/5Ghz setting works just fine. Even without the mesh, I noticed the signal strength of the Deco X20 outperformed my A9 by a large margin. I'm really happy. All my devices work flawlessly and there are no more dead spots. As expected, I did have to manually reprogram/add all my HomeKit devices. Some I didn't have to do anything (those that supported Thread like the Wemo Stage Controller and HomePods), most I had to reprogram (which is fine), but some were really, really belligerent, most specifically the Wemo light switch (v2). I had been led to believe this was because of the mixed 2.4/5Ghz network or other voodoo, but in the end, this wasn't the case at all. All the light switches had to be factory reset before they could be reprogrammed and finding out how to do this was not described in the app, or the documentation. This can only be done by connecting directly to the lightswitch itself as a wifi router, like, you go to network settings, connect to the light switch and relaunch the app which puts it in a totally different (non HomeKit) mode so you can program the light switch. The reason I'm mentioning this is hopefully someone else can learn from my struggles and not blame the router. Anyway, really happy. Hopefully this will serve my family for a few years.