Openbox vs FVWM?

Hello, a Linux noob here, I only started using it a few months ago but made the transaction from DE to WM pretty fast. I can't get used to tilling plus I have a smaller screen on my laptop so I opted for Openbox, it feels good and I like it but I'm always open to try new things and today I came across an article about FVWM. Can anyone say a couple of things that could make me change from OB to FVWM? I know its been around for a long time, so maybe there are some things that I don't know about that I could do in FVWM and not in OB?

(Thanks for having me here, I plan to stick around!)