Pfsense got some bad blood for doing shady things to make opnsense look bad. Beyond that, Unifi management is easy to set up and less to mess around with and has auto updates if you keep the contoller up and enable it.when I used opnsense and pfsense even, I left it out of date since I wasn’t following for updates, and it was a lot more micro managing than I wanted to on a router even though I knew how.

Got time? Want to learn networking? Want more advanced configs? Go wih opnsense/pfsense

Want to have time to do other things? Unifi

Edit: also not sure if pfsense or opnsense does, but unifi has the best rated local integration with controller and home assistant. Easy reboot of PoE devices, monitoring PoE power usage, transmission rates on ports, automation, enabling scheduling WiFi networks or security settings, presence detection by tracking peoples phones connected to the WiFi, etc.