DCS Puccini Ring DAC technology is unique and legit IMHO and sounded very good when I heard it. Pricey though. THis might be a DAC I would strongly consider if price were no object. The transport may not be bullet proof as I recall some flakiness issues with remote operation at the dealer. I expect any item with a $20000 list price to work FLAWLESSLY, GUARANTEED, but that was the only negative.
Soundwise, definitely worth consideration for its unique and sophisticated DAC technology. WHether something sounds better than another or not of course always depends. Read up on DCS and see if you think it might be worth it.
THE DCS Ring Dac technology was licensed to Arcam at one point and is used in some of their more sought after models for much less without the DCS label attached, if you can find one.
From what I have seen and read, in high end audio, it appears definitely true that the name attached to a product definitely helps determine the market value in a BIG almost obscene way, even if the technology under the covers is essentially the same.