This is system dependent. HiDiamond and Huffman may sound good for a while -- but only until you find out that there are much better cables out there. It just depends how far you want to go with this. It depends on how much time, effort and money you are willing to spend.
If you stop at a certain point and you are satisfied with the sound of your cables in your system then you're fine. But you can never find out about better cables once you stop. Which begs the question, is there no end to it? At some point you have to call it quits. Unfortunately, those with really good systems may be calling it quits prematurely with HiDiamond and Huffman cables, because they do not live up to the potential of the components in many high end systems, in my experience.
If you do continue to search for better cables, your earlier laudatory comments -- like my comments on many cable companies -- may eventually be quietly archived to the Used Cables Comments Vault. It's like finding a new DAC or amplifier that outclasses the one you already own. No different. You move on. I have been through countless cable companies in the past 9 years. Hi Diamond and Huffman ZX do not even even close to the cables I now have in my system.
Of course, one expects bravado from cables makers. What cable maker would not declare that he would put his cables up against the best cables out there, cables that are even far more expensive than his? We see these kinds of bold declarations time and again in Cableland. But this is simply marketing bravado. The obvious fact is that this does not mean their cables come close in SQ to the cables of other makers. It just means they are trying to put on a brave face.
The fact is that most cables makers would find their own cables put to shame if they had the courage to quietly install premium cables from competing cable makers in their own system. I have never heard a cable maker admit that a competitor makes better cables than he does. At the least, most cable makers declare that their cables are the best at their price point and that they punch "way above" it, whatever that means, with a deeper sound stage, blacker background, more detail and transparency, blah, blah, blah. As Ozzy has accurately pointed out, there is just so much BS out there from cable makers.
Caveat emptor.