So I've just started building my pedal setup. So far, I havea ehx US big muff, ehx holy grail, ehx US bassballs, digitech digidelay and a BBE Opto Stomp. I'm looking at adding a whammy. its my understanding there are both guitar and bass versions. How mch do these differ? I've never seen a bass whammy for sale, but if I could get a very similar tone through the guitar whammy I'd snap it up in an instant. thanks in advance guys.