I tried the King Serpent 3 RCA interconnects. I had misgivings, and the designer told me I should try Monitor 3, that it would alleviate what I was hearing. I just couldn't budget for it at the time, and still can't. I am liking Discovery Essence right now, but haven't tried them side by side (only using my "sonic memory"). The NBS are quite stiff, but if you can tolerate that, you ought to try them. Just make sure you compare them to the competition side by side. When I had the NBS, I preferred my top of the line MIT to them, running direct from my CD50 to a Rogue 88 tube amplifier (admittedly, the MIT is much more costly when new, so it wasn't a totally fair comparison). From what I can recall, HOWEVER, I would also prefer the LESS COSTLY Discovery Essence overall, to the NBS KS 3 RCA interconnect...in my system..............I learned a long time ago that you can never predict how a cable will sound in your system's context, so if you are interested, then demo some directly from NBS, like I did, if there is no dealer in your area, or if your dealer won't loan you any. Walter Fields was quite personable to me on the phone...good luck!
