What rack-mount gives the widest range of tone shaping? Really interested in feedback. If possible, I'd love to be able to go from Tiran Porters tone on "Takin it to the streets"---Squires (everything)---Geddy's "Moving Pictures/Signals"---John Paul Jones, and everything in between. I realize this may be naive, but to have the widest range of shaping available really interests me. I own a 4003 Rickenbacker and a Fender P-bass--want to have as much tone flexibility as possible. Thx---Steve