Wyred DAC-2 vs. PS Audio PWave


Does anyone have experience comparing these two DAC's? I'm deciding between them, having heard neither in person. Even though their price points are a bit off both seem highly regarded. My primary sources would be CD and USB (from macMini).
Thanks
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The PWD uses apodising or minimum phase filters which, to my ear, make a significant difference in 16/44.1 playback. I don't see these filters discussed much but I think they are a major step forward in digital.
Those filters may be the reason I think the pwd sounds more refined than the W4S dac.
FWIW the PWD uses bipolar out put devices and the W4SII uses FET (so says Cullen)
:(thread jack)
What do you preceive the shortcomings that the PWD possesses. Also what type of modification would resolve these shortcomings?
: (thread un jack)