What's your guys opinion the best octave pedal? I'd really like to get that effect Justin chancellor gets in the intro and various parts of vicarious but I don't want to buy a whammy. Yes, I know, some octave pedals are just as expensive maybe more so than a whammy. But I want something I will utilize more than a whammy after I buy it and I've played with a whammy before and just wasn't diggin too much. So...