I own one ms2000 rack version, use it a lot for drumnbass basslines, it can make really wicked basslines, very bright and so agrressive youll be frightened
for the first oscillator you ve got the possibility to modify continuously the wave so that the sawtooth becomes a double higher one adding a great deal of overtone ; i m not sure thats possible on the virus (the shape offers you to morph through the different wave forms but not so a modification i believe)