Buffalo does this as well, and there's a variety of PFSense hardware available. In PFSense hardware you can even find things with atom processors or laptop tie

Buffalo does this as well, and there's a variety of PFSense hardware available. In PFSense hardware you can even find things with atom processors or laptop tier processors - which are going to be more power-hungry than ARM but also a lot faster, and x86 means everything is bog-standard drivers/etc and Just Works. Although I suppose with the world we live in, perhaps not having your web-facing device have speculative execution would be better. At that level of cost, many people also go to standalone WAPs (although of course there's no reason you can't use DD-WRT/OpenWrt/Tomato to turn an old router into a WAP as well). Some hardware I've seen recommended for PFsense before: Alix PC Engines APU2 Netgate SG-1100 Protectli Vault