FWIW, we have a very singular and unique reviewer in Brazil. He is one of the main personalities of the Brazilian hi-fi world and is reviewing equipment for more than 20 years. He claims to have reviewed more than 1,000 components throughout these years.
What is unique in him is that he actually gives a score to each component reviewed. And the final score is the sum of the scores of 8 individual traits: timbre, texture, transients, soundstage, dynamics, harmonic “fullness”, organics and musicality.
In recent times, he has reviewed many of the main brands, including dcs, MSB, CH precision and Nagra pre, amps, and dacs.
And he scored the msb select 106 points (that is the score he would have given the vivaldi in a formal review, he told me). Nagra tube dac scored 105. Dcs rossini, 100. And the Nagra HD x, 110 (here is the link to the top 5 in each category).
And here is the link to the latest issues of the magazine (bear in mind, they are in Portuguese):
So, if you are thinking of buying a dac, at least take the Nagra for a serious listen.