I've got a Lexicon MPX G2 with the foot-controller and that is the most killer processor ever. If you're willing to buy something that expensive (and rack-mounted)it's amazing. I think it's far and beyond any other processor I've heard (except for a few Eventides). But you can get ANY sound you'd ever want out of that thing. It makes pedals obsolete (even though I still use an out-of-phase harmonizer to get a sound that NOTHING else can get). But I just want to say big thumbs up to Lexicon.