I have lived with the Dodson for 3 years now, first as the 217 MKII D, then with 218 upgrades including isolation transform at coaxial input. Stated simply, it has "disappeared" into my system. I never give it a thought. It is so neutral, detailed and natural I would not think of replacing it; in fact, it is the only componentin my system I haver not considered "upgrading". You will hear voices as natural as if they were present, sparkling highs and deep taut bass. No trace of digital harshness. I use a CEC TL-1x transport, PAD Dominus (latest)digicable (trying out as replacement for Kharma Grand Ref)and an Elrod EPS 2 Sig power cord on the DAC. It is sensitive to transport,IC's and PC's, which should be carefully selected.
Also, Ralph Dodson is a fine, knowledgeable gentleman who is always helpful in answering questions or providing service.
FYI, I have a Krell 300cx amp, Wyetech Opal pre and Von Schweikert VR5 HSE speakers.
Have not heard the other contenders, but was an early adopter of CD's in 1986 (Magnavox 650) and have had a number of CDP's and DAC's since.
Hope this helps.
Neal