Double it up. I have been able to get some disgusting bass out of reason by adding different bass elements in layers.
-Start with a bass tone that will distort well, and add a bit of distortion.
-Then add an organic bass tone like a bass guitar to add a bit of realistic shuffle to the mix
-Then add sub bass, 80hrz or lower (just to fill in the sound)
You can copy your midi notes from one sequence over to each other instrument so they are all playin the same sequence and in key. Then you may want to subtract some keys from the sub bass because it will sound much better (especially if you have a busy midi sequence.)
You can do the same sort of thing to make a reece:
-open a combinator and add about 5-6 maelstroms all loaded on the same patch, then slighty detune each maelstrom to get your reece sound.
Don't forget to bus in some mastering combinators on your mixer. I like to create a combi-mastering for each section of the track like Drums (all rex's & redrum & NN-XT drum hits), or Sub Bass, Lead bass, Pads etc.