Others I've tried:
Wolff Source--agree, slightly to the warm side of neutral.
Van den Hul Mainstream Hybrid--neutral, great on amps, inexpensive.
Component Plus Premium PC--Similar to Z-Squared, slightly more bright, and a bit more airy sounding. At $195, this cord is also priced really well.
Signal--Dark, choked, similar to the Audience in our system.
Electrglide Mini Khan Plus--Neutral, more open sounding than the Wolff Cord/Z-Squared on the source. Great for jazz, vocals, not quite as good for rock, IMO.
Verastarr Signature--Slightly brighter than the Z-Squared. Not as open as the Component Plus.
Virtual Dynamics Nite I--neutral, though more closed off than the Mini Khan Plus, on CDP. Sounded less natural than the Wolff, or the EG cords.
Electraglide Ultra Khan Statement R/R--Every attribute of the Mini Khan Plus, just more of it.