I currently have a DSD for sale, and I'll tell you why.
It has less gain than the PWD, so in my low gain, direct-to-amp system I was able to top out the volume control. The music was plenty loud, but there were times I wanted a tiny bit more and couldn't get it. The DSD also sounds better on its low gain setting, as that reduces the analog noise floor.
Spectacular imaging and *way* more detail retrieval than the PWD (my only source of comparison), but I just couldn't use it without a preamp because of the gain issues. Someone without these issues would likely adore it, and should buy mine.