Metric Halo Thump
my msot sued freeware VST
Even against pay sub-bass generators I feel like thump is one of the best. The volume and pitch envelopes are so useful and the inclusion of 2 independent bands? genious! its just a great plugin for managing your ultra low end in musical way. If you have this and the waves maxxbass plugin the only thing keeping you from having perfect bottom end in every genre is your ears, man.