Depends what you want. The Duality has a very unique and interesting texture, it reacts differently depending how you play and sounds very ‘organic’. The EHX Green Russian is a bit more drab by comparison, but it’s a brute! It has more of a mid scoop so it’s difficult to hear it as a fuzz effect in a busy mix, but there’s no denying when it’s turned on, it adds so much low end and sustain that it just lifts everything up, so I treat it as more of a boost pedal. If I stomp on it, people don’t hear I’m using fuzz per se, but that extra low end sucks the air out of the room and all they hear is that the whole overall sound just got a lot heavier.