Video takes to long to get to the real meat Should've concentrated on the level of fuzz, not sweeping through the tone... But, bottom line: both are great pedals, each with its' own unique roar. Just buy both. That's what I did.
People can say what they like about the Opamp big muff. To me it doesn't sound like a real big muff and that's a bad thing because the big muff is one of the nicest guitar tones out there.