How big is the tonal difference between the PI, Russian and Little-Bigmuff?

All i know is i heard an audio sample of the PI and it sounded way different to how i remember my Russian one sounding before i sold it.
well, though i don't know much about fuzzes, you can't trust internet clips at all. i doubt there is a night and day difference with the pedals. a fuzz is a fuzz whether or not its russian, right?

but get another opinion. R_H_C_P has a big muff i believe, ask him
Quote by yorkshireterror
Dunlop's got the right idea
Oh yeah, only took me a few months
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Try them out yourself, that's the only way you'll properly tell the difference.

But the USA one wasn't controllable and too over the top, the Russian one is more tweakable and grittier sounding, I prefer Russian ones.
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Fender Strat/Tokai LS80>few pedals>Orange Rocker 30