In terms of VST's I'm a fan of Gladiator , almost all of REFX stuff and UA and Native Inst.
But the virus has become my electronic sound workhorse. My main melodies come from the virus while I complement with the vst sound.
The converters have a lot to do with the sound of the virus.
If you like the vst more than the virus and happen to have a polar I'll buy it off you