Speaker cable suggestions for Rogue and Spendors?


I have a Rogue Audio Magnum 88 amp, Rogue Audio Magnum 66 preamp and Spendor SP100 speakers. Right now I have Audioquest Indigo+ speaker cables but I am looking to upgrade them. I would appreciate feedback from anyone with similar equipment. If it matters my front end is a Meridian 508.24 cd player and my interconnects are Synergistic Research Alpha Sterling (cd to preamp) and Audioquest Viper (preamp to amp).
precbsed
If you can find out what is used internally on the spendors.It would be a great choice for Wire.There is something to be said for synergy.
For the Spendors: was suggested to try Nordost Super Flatline - if bi-wireable, or Flatline if not. Quite a good recommendation!
My brother has Analysis Plus Oval Nine cable between Rogue 88 and N.E.A.R 50Me II loudspeakers. I think they sound excellent. Bass performance, in particular, is exceptional.