I have been digging into them one by one trying to get the nuances of each pedal. I am blown away buy the drive pedal. In the less aggressive stage it produces a great break up on the Excelsior that is very sensitive to dynamics and pickup attack. Very cool for blues and classic rock. The aggressive setting as some cool Angus Marshall tones and the filters allow you to go big and dark via Iommi without getting muddy. The MF Drive isn't aggressive enough for Pantera or Djent but for most forms of blues, hard rock and metal it is more than serviceable. The kick in the but it gave the Excelsior was amazing I was expecting it to explode at any minute, I was peeling the paint off the walls there for a second. I am plugging in the Trem next.