Not at all. Let me explain, your transition to Kudos was interesting for me as you moved away from Dynaudio.
Just saying I was a bit tempted to follow your footsteps and buy a pre-loved S20 from Ebay (I will not pay full price for S20), but luckily I read this thread and realized that if NACA5 and S20 don't work, it isn't for me. There have been a few comments over the years that Kudos tweeters are on the hot side.
I dislike very much a departure from Neutrality in my hi-fi. Only If the recording it bright, that is the only time I want to hear it.
I confirmed this when I heard Naim QB and Muso, they have about the same tonal balance and neutrality as many speaker manufacturers who don't want spice things up. As I said I myself loved B&W until my dealer pointed out how bright it sounded and I make the change to a more neutral speaker philosophy.
People look for different things from their hi-fi, but me personally, when I play a Metallica album, I want to feel that energy that I heard at their live shows on my Naim hi-fi.
NACA5 allows this to come through so it's very important for me to have cables (and speakers) that preserve the musical energy and excitement.
Anyone who's seen Metallica live knows there is no refinement or delicacy in the sound, only pure energy metal rock music !!
Naim tune all their amps before statement with NACA5, and before Superlumina, there simply wasn't any other speaker cable that Naim made. I think one has to stop and think why was the case and understand the Naim intended performance, and why Naim amplifiers in fact was created to begin with.
The reasons are exactly what I said above, JV wanted to create an amplifier that captured the energy of a live rock show.
This is verifiable on the Andrew Everard review of the NAP 250 DR.
Since this is a cable thread, I wanted to put the other side of the story in defense of NACA5.