I don't have experience with Nordost, but I do with Purist Venustas. I just recently replaced a Cardas Clear Cygnus RCA between my Chord Qutest and PrimaLuna EVO 400i and the everything was so much more open. SO much more individual instrument focus, it was incredible. I am also running the Venustas Luminist bi-wire speaker cables and they are incredible too. I have been a Purist fan for years, very open sound.