My entire system cabling is Signal Cables and I am pretty happy with them. I am not sure what price point in "high end" you are looking at, but there is another gentleman on this forum who uses Signal Cable with his Legacy Whispers or the like.
Audio Sensibility also looks good, but I have no experience. You can request a trial cable from each and decide for yourself which one to go with.
Audio Sensibility also looks good, but I have no experience. You can request a trial cable from each and decide for yourself which one to go with.