I tried a Border Patrol DAC after seeing the Steve Guthenberg Audiofiliac video on it, but when I tried it I thought it was very smoothed over and kind of lifeless in its sound. I was using an Ayre Codex at the time, and since then I went to a Chord Twoqute then to their Qutest and definitely the Chords are much more detailed and energetic and realistic.
Some people do like the Boerder Patrol unit it seems but maybe they haven't compared it to other ones that can give a clearer view onto the musical performance.