I have a Way Huge Swollen Pickle MkII on my pedal board and love it. It is loosely based of the green russian big muff pi with more versatility in it The hidden knobs allow you to change the clipping diodes and adjust the Q of the scoop knob. I can go from 80's hardcore punk to thrash to doom/sludge to classic rock with that pedal They are LOUD and will overdrive the preamp of your amplifier
Multi-FX pedals suck your tone because there's a large flow of digital processing. There's no way to get it back. It's so worth making a huge board with individual effects pedals linked up!!!!