I use a shotgun bi-wire pair of Nordost Valhallas on my Krell FPB 300cx to Von Schweikert VR5 HSE speakers. Been a happy listener for years with this setup, and only use one set of terminals on amp end. Have biwired many different speakers for years and have never used different brands, or different models within the same brand, for HF and LF terminals. Would not make sense to me. Would not use different tires on front and rear of my car.
Neal
Neal