Great choice mate.

I really must get around to looking into opnsense again. I look after 50 odd pfSense boxes (about half on Netgate gear) across the UK but I am a believer in choice and I remember when opensense sort of split from pfSense. Its great to see the project thriving.

When you deploy a well respected alternative to your ISP provided equipment and get it to work, you generally get it right. They (pfSense, opnsense, openwrt and all the rest) will not do an insecure config out of the box. You do have to try quite hard to get it wrong!

Adguard, pfBlocker, pi-hole and co. all largely do a similar job and that is keeping your devices away from the seamier parts of the internet and the seamier sides of the internet away from your network. They are not perfect but are really good at it.

Think steel bound three inch thick front door, with really good hinges and a lock that would give a professional a hard time, rather than PVC or wooden panel with a mortice lock. Do keep an eye on the windows though ... 8)

Keep it and everything else reasonably up to date and you are probably golden.

That sounds like it would be a fun challenge - with the occasional extremely hairy day. Do you manage people's home networks, or small business, etc? I understand if that is not info for hn of course.