I just started migrating my network from PFSense, a bunch of tplink switches and Aruba InstantOn APs to unifi. I’m almost done (just missing a couple of APs more and 1 more switch), and I honestly am extremely happy with the decision. The Unifi APs are not as powerful as the Arubas, but the improvements to the performance of my network more than makes up for that.
You have the option to get a solid hardware that you can install openwrt on, and then use the Deco mesh just for the Wifi. That’ll give you similar, if not the same results, and save you a few bucks in the process.