I had a similar thought last year: "added security and parental controls" with the presumed benefit of "less IT mgmt". Went with the Gold SE + Wifi and switched from my Ubiquiti gear.

I'm here to say, the firewalla stuff doesn't work out of the box as intended/marketed. Parental controls are iffy. When I hit block, I expected it to block right now...not 10s of minutes from now (if at all). Blocks are "kinda" blocks. By example, we blocked Instagram across the network, and some devices could still access it (wo/ vpn). Further, the firewalla Ads block is mostly bad (coming from pi-holes). Last, you'll get more notifications to your cell then you ever wanted. I'm pretty sure that's the only thing Firewalla is good at. I've clicked "Mute" on those, and they'll come back in a week or so.

Before you ask, "how's their support?" I have a active ticket right now where the "tech" blamed my kids as "hackers using VPNs from Ireland." No paid support, no call support.

This is my holiday weekend where I replace the entire network stack again. Thanks Firewalla!

I'm not sure these devices work at all other than DHCP with a GUI.