Don't care for a switchable octave?
Danelectro Eisenhower.
Discontinued, but pretty affordable on the used market.
It's based on the FZ-2, I have several octave-up fuzzes that are Superfuzz-derived, and the Eisenhower sounds/responds more "alive and breathing" than the Idiotbox Ron (Fucking) Swanson and has no reason to hide from the EQD Fuzz Master General.
Going by photos, I expected to cringe at the relic aesthetics, but they look fine in real life.
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If you can't live without a switchable octave, check out the Foxx Tone Machine inspired pedals out there.
I love my HBE UFO, but they can be a bit pricey. Other FTM-based options are the Danelectro 3699, WA Foxy Tone Box, or Orange Fur Coat, for example.