I migrated from OPNSense + 3 omada EAPs + two omada switches to a full Unifi system + UDMP Max, feel free to ask away.
Mostly I was tired with the bugs both for Omada (sometimes I had to restart the switch to change the VLAN on a port bc just changing it in the controller didn’t work; yeah) and OPNSense (OSS vs proprietary complaints in general about “it just werks”).
Unifi really has come a long way, they have proper switch ACLs, real BGP (!!!) by you just uploading whatever frr.conf you want, policy based routing, and more stuff that I can’t remember.
It’s not perfect but I would say it’s very good value for money.