..then you get one and can't stop playing with it. Tremolo was that for me. I got a Vertigo Tremolo from Source Audio on a whim and after 20-30 minutes playing around with it and my Infinity I'm pretty sure that there will always be one on my pedal boards. Of course that leads to the next level of this... What else haven't I tried that I'd find useful. So I put it to you. What effect have you thought little about but was just blown away when you actually tried it?