well, i must say i was also dissapointed by the Chord dac 64, finding it to sound etched and hard, almost like the musical equivalent of oversharpening a photo, to the point of ruining the artistic message. Too much leading edge.
Im also not a fan of the benchmark, i have never been able to see what all the hype was about.
As for dac's i have enjoyed, the bel canto dac3 did pretty well, as did my last cyrus dacX which bass weight aside, was very close in overall character to the dac3, and certainly could keep up in resolution terms.
The dax decade is a superb bit of kit, and some of the smoothest digital i had ever heard... until...
My mate bought a brand new marantz SA-7S1, which bar none, is simply the best CD playing machine i have EVER heard, it is head and shoulders above anything i have heard.
In fact a short while ago, i was listening to some music played back through my friends DAC as built into his accuphase integrated, and thought it sounded just fine, certainly as good as any other stand alone DAC ive heard. Then playing the same track on the marantz totally crucified it.
I would place the marantz well ahead of the dax decade, and as i say, ahead of any other digital playback system i have heard to date.