My son just picked up a Chord Qutest and loves it. Swapped out the stock wall wart power supply for a Teradak 5v 1a LPS and it took the sound to another level. The stock PS sounded veiled and muddy in comparison. It is also very sensitive to usb cable changes. It needs a minimum of 75-80 hours of break in to sound good.
I read on another forum that a guy who owned a DAVE preferred the sound of the Qutest which has me scratching my head. The Qutest may be one of the best buys for a DAC but it does not sound like a $9K DAC.