The Cardas Clear are in a completely different league than the GR. They deliver everything the GR does, but they strip away a huge amount of veiling. Soundstage depth is dramatically increased and even the most subtle ambient cues are rendered with absolute clarity. I strongly encourage anyone shopping for new cables to audition them. They are really quite amazing.
I quite agree with you, high definition, warmth & musicality at the same time time, but speaker cables (bi-wiring) too expensive, not in relation with the single wiring.