Can anyone recommend a fuzz pedal for heavy 8 string rhythm stuff?

For context I play a legator 8 string through a peavey 6505. Looking for something that works well for chuggy palm muted riffs. Preferably something with an adjustable mid range, but if the pedal already preserves enough upper mids not to get lost, that works too. I already have big muff that works great with my 6 string, but it doesn't seem to fit the bill with my 8 string.