Commento ufficiale

To be perfectly blunt, there is no difference - the HID is more responsive in that the software doesn't have to interpret the audio signal, it just "happens." Give HID a try, you get so many more features available that way, including looping, hot cues, browsing on the CDJ itself, etc.
And the reason DVS isn't working for you is the DJM-2000 doesn't support DVS input (it only has one input, or zero, depending on the configuration).