I have used AZ Silver reference series 1 for 4 years, then added a single wire run of Hologram series 1. I don't plan on changing, way better than the Nordost I used before. I took advice on the Gon about mixing with Matrix cable, but find all Silver reference much better. I really believe that the one area where sticking to a single company pays dividends is in cables. I liked them so much I have added the Adagio speakers, which are as good as the reviews say and then some.