The Border Patrol dac measured poorly, according to John Atkinson of Stereophile. However, upon listening to it, Herb Reichert gave it a glowing review. Lots of people own and love the Border Patrol dac, including myself.
The Musical Fidelity V90 dac is shockingly good @ only $299. I think it is now unavailable/discontinued. I thought it sounded so good, I bought two...I use one, the other is put away. It is considered a class A component according to Stereophile.
In my opinion, my short post covers the gamut of measuring, subjective listening, and price. Just looking at the 2 examples above, you can see that there is no rhyme or reason why something sounds good, weather it be a measurement or price.