Best cable s for bottom end of a bi-amped system?

I would like to hear anyones opinion and/or expierience on what the best cables are to use (both ICs and speaker) for the bass section of a bi-amped system. The cables should be able to deliver tight, but deep, bass.

Here is what I have:
Wadia 861 with GNSC Reference upgrade
Bel Canto Reference 1000s to power the bass section of
Revel Studio (originals NOT the II)

I am using the RCA outs on my Wadia directly into the Bel Cantos. I want to know the best ICs in RCA terminations since I am using the XLRs to go into my Classe-CA400 for the highs and mids.

I currently use Audioquest Columbias for the ICs and Kimber Monocle X for speakeer cables.

I thank anyone in advance for their comments.