Although the Furman I use is 20 amps and requires a 20 amp outlet shape, any 'regular' Furman (with a regular power plug) is better than just a power strip because they all have overload protection. They will blow out in an overload rather than passing it to your equipment. I also like seeing the voltage readout; I can see if a brownout is occurring.

I use my Furman in conjunction with an APC UPS (uninterruptible power supply).

As for plugging one Furman into another, I don't know. Maybe Herb does. The APC people did tell me to plug theirs in first, NOT into a Furman, but as I mentioned, the 20 amp plug on the Furman makes doing that not possible. I can tell you, this system survived a lightning hit that blew out quite a bit of stuff in my house and my neighbor's house, but my audio equipment was OK except for one small firewire circuit board. I was impressed.

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.