For me it's a Fulltone Plimsoul. I keep my Fender stlyle amp on "edge of breakup" and this is the best pedal I've found to take it to Marshall territory. As an added plus I LOVE the sustain is provides for single notes/solos. Honorable mention: Providence Chrono delay. I got hooked on it watching Lance's demo and set it up as he does. There may be better sounding delays but I don't have cash or inclination to go down that rabbit hole with this one in the house.