I'd like to add the Big Muff sound to by arsenal, If I spring for the Barber Trifecta is there any reason to pick up a Little Big Muff; or will the Trifecta cover the Big Muff sound?
Trifecta does a great Big Muff and a great Supa Tonebender. Actually it does a great Jumbo Tonebender as well, but I'm really digging the Muff and Supa tones right now. You will absolutely not need a LBM in addition to it.
Mainly just keep the toggle switch on the left most position (that's the BM circuit). Volume to taste, tone in the down position at around 10-11 o'clock. sludge around 2 o'clock. I set the fuzz at around 3-4 o'clock. Sometimes I've been running the tone control at noon for a little more top end.
Now on those same settings, flip the toggle switch to the far left for the Supa Tonebender sound. Hear a little more highs and a low end that almost has some give or push back when you hit the strings harder. SWEET! Subtle, but so nice.