That’s an impossible question to answer as they are all fantastic in the right systems. As a general rule with valve output DACs, spending more money gets you a less characterful and better sound and they work best with valve amplifiers. You really need to find a way to listen to a range of DACs, ideally in your system, to give you a better idea of what suits and don’t get hung up on NOS over other types. There are loads of great sounding DACs that aren’t in your face. Others to consider include Border Patrol, Aqua La Voce and Audiobyte Black Dragon plus Metrum, Lindemann and Exogal. We’ve never been so spoiled with great DACs.