Have been looking for a Digitech Drop for a while with no success. Singer can't reach some of the high notes in the stuff we do and some of it doesn't work well without the low notes. So, have just 'snapped up' a Behringer US600 which is allegedly capable of handling pitch shifting so I can tune down from E to Eb or D. We shall see. Up til now I've used a pitch shift patch on a Zoom B3 but it sounds a bit 'chorusy'. I'm supposed to be getting rid of stuff by the way, not acquiring more of it.