I am a big fan of the Ansuz cables and darkz, but all these things comes at a high price. Of course the Ansuz people claims that any system will be bettered by the darkz cables and power distributor, and they are correct, but for the money it cost there are other o options for the same amount of money. Of course much depends on how much you want to spned on your system. this thread about the differences in the unity range may be of interest:
The Atom vs Star or Nova - is it worth the upgrade? - Streaming Audio - Naim Audio - Community