I love a good slow dirty flange, that dark metallic shit with the LFO mixed almost all the way out.
And oh yeah - I gotta second the TAFM for the HEAVIES. Great stuff there. Especially because with the clean blend you can run a super nasty trebly octave fuzz into it and blend it into the warm and wooly which the TAFM brings on its own.
Devi Silver Rose for that matter too...