I tested all 3 options…not sure if you bought yours yet…EHX says that they are the same circuit…Big Muff Pi, original comes in a big metal box…the little, same stuff but in a compact box…and Wicker, same also, small case, and two switches…not sure what happened during my test, but I liked the original much more than the others…found the Little BMP not as powerful as the Original…and the Wicker is too noisy…would like a confirmation from EHX if they are the same stuff inside…except for the 2 additional controls for the Wicker…