The DS one looks a bit like porcupine quills in places, but for me, the main failing of Poser's DH is that it almost always reminds me of nylon doll's hair.. 'Wire' fits also to some degree. I'm not sure what is, you have the macro structure and then the micro structure of the individual strands. It's almost like real hair may have more tiny 'branches' and whisps coming off the shaft that soften the overall look. The micro structure would effect how the hair interacts with light and greatly influence the look, though I'm not sure to what degree this is simulated by the render engine.

Obviously, the more the better within reason, so more finer strands are best but that increases time and probably makes styling more complex. Overall, just talking about the last few examples, the DS one looks softer and fluffier - more like hair/fur and less like a synthetic substitute - personal opinion. Like clothing, a hybrid approach might be worthwhile exploring, trandmapped for the main body and dynamic for moveable parts, stray strands etc. - assuming the texturing/appearance can be made reasonably uniform.

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