There are a few control voltage expression pedals out there and I wonder if there is any difference between them. From what I can find There is the Roland EV-5, Line 6 EX-1 and the Moogerfooger EP-1. There are a number of pedals that can use a CV pedal - several boss pedals, all Moogerfoogers, the Line 6 stomp boxes and several other boutique pedals (Robotalk, Lovetone, Pigtronix, Rastop Designs etc.). What CV pedal do you use? Is one better than the other or are they all about the same?