I have used been using Apple AirPort for almost 20 years, and have enjoyed them for the most part.
Sometimes last year, I started to have some Wifi issues on the 2.4GHz band, and figured that my aging 6th Gen AirPort Extreme (lastest gen) might be due for a replacement.
Normally I would troubleshoot, but in this case, I figured my AirPort was about to go, maybe I would try a Mesh Wifi system that I kept reading about, and maybe it was time to move on from Apple's legacy network equipment.
There was one thing in particular that I was looking forward to with the mesh wifi, that was the seamless band switching and seamless roaming feature, as I would put a node near where I park my car enabling me to have good signal when sitting in my car getting ready for my morning commute. With the AirPort, I would have signal, but it wasn't good where was car was at.
I bought the expensive Linksys Velop Tri-band 3-node system:
Enjoy full-strength WiFi in every room of your home with the Velop Mesh Wifi System. Homekit-enabled. 3-Year Limited Warranty. Free ground shipping on US orders.
www.linksys.com
At first, I was mildly impressed with it, but then I started having a few issues, mainly with periodic slowdown. The seamless band switching didn't seem to work either. As it would sometimes switch my stationary laptop from the faster 5GHz band to the slower 2.4GHz band, even though I was only a few feet from the parent node.
Another thing that was a disappointment was the seamless roaming, as it wasn't seamless. I would sit in my car and the internet didn't work, even though I was just about 20 feet from a node. I found out that my iPhone was still connected to my bedroom node, which was on the other side of the house.
I looked up solutions for the seamless roaming problem, and the support page said to turn of Wifi on the iPhone and turn it back on. It worked, but it wasn't what I considered "seamless".
As for switching to 2.4GHz band, and the slowdowns, I finally did some troubleshooting, and it turns out that the 2.4GHz band issues on both the AirPort and Linksys was because of over saturation of the band in my area.
I split the bands on the Mesh system, and kept most things on the 5Ghz band, but some of my devices will only connect to the 2.4GHz band.
I tried doing the channel finder, but the connection speed on 2.4GHz was still erratic. I talked to Linksys tech support and the higher tier tech support for many hours, trying things, testing, but in the end, there was not an improvement.
I ended up returning the Mesh system a few days before the return period ended, thinking I would try something else.
I went back to using my AirPort Extreme, but this time put almost everything on the 5GHz band, and I was surprised that the transfer speeds were actually much better on the aging AirPort than the new, updated tech Mesh system.
I then decided to get another AirPort Extreme for a fraction of the price of the Linksys Velop, and hardwire it into the network. I moved it close to my parking spot, and everything has been fine.
The 2.4GHz band still sucks, but the performance was actually better on the AirPort than the new Linksys.
I am unsure of what you will make of my story, but I guess what I am trying to say is that just because it is new, has great reviews, and expensive, doesn't mean it will be as good as your current setup.