I have v3 of this mike and its really good.
I have it on my Senheisser HD650's, works like a charm.
I have an Xonar Essence STX card, but am having some issues with that and DCS.
The sound cuts out on my headset from low idle through to taxi, its like a dead spot which is really off putting.
I have no idea why, it works fine for everything else.