Cardas or Nordost for Simaudio/Magico

Looking for new cabling for Simaudio 330A amp/390 Pre Streamer into Magico A3 and have narrowed down to Cardas or Nordost primarily as I understand that Simaudio often shows with these cables.  Cardas level would be Clear Cygnus (or maybe stretch to Clear), Nordost would be Heimdall 2 (or maybe stretch to Frey 2).  Need PC, Speaker and XLR IC.  Currently using Acoustic Zen.  Ideally, would like a bit more detail and improved soundstaging.  Probably will buy used and so just want to pick one and go with it.  Appreciate any input.