Great suggestions everyone.
So far, I've tried a SansAmp, ProCo Rat, MetalZone and just about every plugin known to man. Each of the stompboxes proved useful in certain applications, though I found none of them to be extremely versatile. I really don't care for digital distortion (both hardware and plugins). Driving the pre's on my console results in a mess (Mackie 32.8.......i know, i know...).
Although the Great River, Phoenix, EL, Thermionic, etc.. pieces can do much more than a distortion unit, I cannot afford one of them right now (I'm trying to stay around the $600 USD range).
I'd like to try out the Sherman Filterbank on some of my own audio sources before purchasing one. Unfortunately they're pretty hard to find in the United States -- none of my local dealers carry them

, so my only option is online purchase.
@
dlmorley &
robd -- Would you say that the Filterbank can produce a very diverse range of distortion color..........or does a Sherman simply sound like a Sherman?
-T