Honestly, I don't know where (or why) you are reading about this DAC vs others, instead of listening if you really want to find out: after all, they do have a friendly return policy...
I now have two VDA2-VAC1 setups, and would say that the VAC1s are definitely helping with dynamics and with bass. As for whether or not there are midrange or bass characterizations that are due to this particular DAC, I leave it to the journalists to describe: to my ears, the DACs do a lot better than the cheap spinners I put under them, and the result is more pleasing than what I got from higher-priced CD players (i.e. in about the same range as Oppo+CIA+cables). In addition, I run a Squeezebox into each DAC, the real reason for getting these: two unobtrusive set-ups that get high quality streams into both systems from another room, so I don't have to hear the computer when listening to music.
So, is the CIA VDA2 a Messiah of music reproduction? No. Does it beat up your DAC? You know, maybe it's not a competitive sport when you set up your stereo. It should please your ears without overly stressing your budget or your significant others. The VDA2, when paired with good cables and the VAC1, is a very good DAC, and it's small, and it's surprisingly affordable.
However, for anyone who wants to read comparisons rather than listen (I'll be honest, sometimes doing both at the same time is a pleasant tautology), here are two threads that compare the VDA2 to the Benchmark:
Benchmark vs. CIAudio VDA-2 and
http://www.head-fi.org/forums/f7/cha...ac-1-a-239178/