I would not call any audiophile cables the "Rolls Royce" of cables, not even the line of cables I do represent and although some of my customers have felt these cables to be superior to the Valhalla.
In some systems, the cables I sell will be the top of the line, in others you will find the Valhalla, or maybe the Siltech G5 doing a better job.
I always try to teach my customers two things:
Look at the price/performance ratio and regardless of what brand of cables you look into:
Audition, audition, audition. Do not totally rely on what any dealer says, put the cables you might want to buy to test in your system. Listen to your system with the new cables in your listen room, compare the cables, do a little cable shoot-out and only then decide.