Purist Audio Dominus Ferrox. Doesn't have lean bass, but it controls bass like no other power cord I know.
I would agree with this strength of the Dominus Ferox but the Stealth M5000 quite handily beat the Dominus here at it own game when I had a system fully loaded with Dominus PCs. And the Stealth Dream continued on with this strength but brought on refinements in many other ways. There may be some of this in the lesser priced Stealth products. It's worth some investigation.