just got my 560 last week and just got my mission engineering ep-1 expression pedal today. the ep-1 is smooth all the way from off to full volume for me. it was really expensive, but i like all metal pedals and this one fits the bill. i think all of the pedals with the extra side volume pots etc all seem to be the pedals people have issues with. keep it simple, just 1 pot, 1 stereo jack and 3 wires and less problems to encounter.