I'm using the Protectli Vault FW4B 8GB RAM, 120GB mSATA SSD as a firewall appliance for my extensive home network.  It has enough 'horsepower' to handle several people in the household watching video, a total of 35 clients on my gigabit network, a VoIP phone system, an at-home business and inbound and outbound VPN service.  I bought model with the larger RAM and SSD drive for plenty of buffering and network storage space.  The PFSense community edition software is free and easy to download and write into the firewall appliance.  Using a keyboard and display, the basic bring-up is easy.  Once the basic firewall is active, the more advanced features of the PFSense firewall sofware can be overwhelming at first for an intermediate IT professional.  I use the firewall software to VPN through my Internet provider as well as offering remote access VPN sever to my network and file share.  In my setup, the firewall appliance sits between my cable modem and a managed switch and my WiFi router (which has been re-configured to be an access point).  The firewall appliance serves as a router with DHCP complete with VLANs for segregating traffic.  The Protectli FW4B will definitely work for a large household and a small business.In the picture, you will see the Protectli vault FW4B on an open-wire shelf in my IT closet.I found NetworkChuck's YouTube video entitled "your home router SUCKS!! (use pfSense instead)" to be a good introduction that covers about 25% of this firewall's capabilities.  I also found Lawrence Systems' YouTube video "2020 Getting started with pfsense 2.4 Tutorial: Network Setup, VLANs, Features & Packages" to be useful material.I hope this firewall appliance serves you well.