I'm using the Logitech g35 surround sound headset. It's USB which I prefer to analog. It has a clear mic and good EQ controls. It DOES NOT have a flat response by any means. It's a razzle dazzle bass boosting commercial product designed to appeal to the masses. I don't care, like 'em anyways. I have a pair of in-ear monitors I hook up to my Pandora when I desire fidelity [as much as compressed digital can provide].
I can tell whether the plane is too my left and in front or to my left and slightly behind me. If the product works as intended, it's not a gimmick. Or, I've been fooled into being able to accurately tell the location of an enemy tank.
Get the best surround sound headset you can afford. Or get a full speaker setup. You'll be satisfied either way. Headsets save on space though.
Im surprised at Chalenge's contempt at the proposition that two drivers can accurately reproduce 3d sound. We mere mortals have only two ears yet in nature, we can tell from which tree a bird chirps. How? The brain processes the delay it took the sound to reach one ear after the other, the change in timbre due to reflections, and phase variance due to those delayed reflections. All a headset manufacture needs to do is model these acustic properties. If it's a gimmick, it's only because the model fails. The theory, however, is completely sound.
