May just take a look at it... I'm not doing much with OpnSense, I'm running RPi on a separate system, that I'd like to integrate into DNS on the router itself, but that's about it. The only other feature I want to use but haven't configured is auto failover to a cellular modem. It's cheap, and enough for work, but not great for heavy use.
I used OPNSense briefly when I got 1gig synchronous fiber ~2015 at home on an old i5 desktop, which I think was shortly after the pfSense fork, and then found Mikrotik and RouterOS. Used RouterOS at home since and have been replacing aged out Cisco switches in the datacenter (100gig) and closets (20-40gig) cheaply. I'm looking to dump a handful of ASA's for OPNSense and the messing around I've done so far has been positive. It's aged nicely.
Been using OpnSense for about 8 years now though... it's just been the best option for me, I use separate commercial AP.