I tried out the current Whammy model (AKA the WH-4) on guitar, and I must say, it's pretty over rated... The tracking isn't as good as I'd hoped. It doesn't pitch bend until the pedal is rocked all the way forward. Maybe Digitech should improve this model. Give it the same chip as the original model or something. Please don't tell me to look on eBay for an older model. I cannot be bothered.