The Fuzz God is epic and crazy. Flexible. great gnarly fuzz.
The RAH isn't as hard to dial in as some describe. Rather good sounding really.....for both LZ and non-LZ rock stuff. Interesting gritty mid focused OD that is nicely touch sensitive.
The FD3 sounds wonderful. To me, not as dark as some say, and not as cardboard-y as the FDII I once had. Tightens up my Mesa Heartbreaker perfectly. Gives it a bit more squishy liveliness too. (it's a pretty stiff amp)
The Oxblood is absolutely killer. It's got a thick mid honk to it....which I really enjoy. People talk like it's a klon-ish pedal, but I don't hear that at all. It can clean boost nicely and up to high gain tones. The honk makes it sound beefy, but still crisp.
I can't say I'm too familiar with any of those except for the FGII. Used to have one, loved it but eventually flipped it cause at the time I was drowning in fuzz pedals and had to make a couple tough decisions. I'm back at square one now, desperately looking for more dirt again
Anyway...The Fuzz God II is gnarly and versatile indeed. Only small gripe I had: Mine didn't have a ton of volume, at least noy in the particular settings I liked most. And it was a bit finnicky and unintuitive to tweak imo. That probably tells ya more about me than about the pedal though, seems like my brain has troubles handling dirt pedals that have more than 3 controls