I bought a digitech whammy used today and am loving it. I tested in the guys house. And just from doing a few noises for about 2 minutes, knew it was for me. When I got home I realised there was an octave function on it. To have the original note and an octave down. I think it sounds great. But I have agreed to buy a used boss OC3 off another guy on a used gear site. Am not sure whether I should call off the sale and apologise to the guy and go with the octave on whammy, or buy it off him. I think it the whammy's sounds great. Have heard the OC3 in action on you tube. And think it sounds great. But there is no way of adjusting the level of the octave on the whammy. Where there is on the OC3. And it is just for low octaves, so is highly adjustable. I was only gonna use the octave pedal for boosting the bottom during guitar solos. And the level on the octave of the whammy seems like it might do the trick. Just wondering what someone with experience would think? I do love it's sound. But not sure I want to shovel out another 70 euro on an octave pedal, when there is an octave on this pedal, that I like. Opinions? I know if I have it set to the octave, I won't be able to use the whammy function without changing the setting during a song. So that could be a problem if I wanted to use the whammy function. Hmmmmmmmmm.