I have a Filterbank, and find that it works best on analogue sources...it can really crunch up a 303 nicely, and it's ace on the 909 giving some mad results.

It's pretty complex though - it's got so much scope, you should realise that there are loads of good possibilties with it, but conversely so many bad settings that will result in not much sound coming out your speakers.

Check the demo video out on www.sherman.be, it gives a good account of what the beast can do.