I dunno,..maybe I didn't use it with the right amp or settings, etc.....but I find piezos on electric guitars a waste of time. Tried Ibanez RG-something and a Petrucci
They never sound as good as a real acoustic and unless you're on stage and cannot have a 2nd guitar for the acoustic stuff then.....I see no use for it. Turn down the gain, stomp on the chorus and roll down the volume and it's 95% as good.
Save the money and buy a real acoustic or electric acoustic....Tom Anderson Crowdster maybe? yum! or Taylor T5? yum yum!