Id reccommend trilogy, allthough people have said bad things about it on here, they obviously aint spent enuff time on it to see its true potential. its the daddy if you know how to "handle" it correctly!! you can automate
"everything" quite easily in my experiance & as with every VSTi you dont necessary have to use the presets, theres 3gb of bass sounds to play about with, you can really do alot with that!!
also id reccommend Crystal, you can get some mean dark n nasty bass outta that.