I own a W4S Dac1 and a PWD.. The W4S was very close to the PWD.. not as refined, as dimensional.. close but not quite as good, the Dac 1 is 90% of the Dac 2.. The big story here is the PWD MK2.. it is substanially better than the PWD Mk1, and is most likley as close to a SOTA Dac as you'll find at anywhere near the price.. I'll go out on a limb and say that unless you plan on spending five figures there isn't a better Dac than the PWD MK2.. and just an opinion is that even the multi kilo buck Dac's aren't going to be nessarily better than the PS Audio but different.