Just me, but I wouldn't buy a pair of shorts on the basis of any supposed health properties of the chamois. I see where they're impregnating them with silver threads and triclosan and all sorts of things I wouldn't necessarily want near my lady parts, all in the name of killing (omg) germs. Having a healthy immune system, a good diet and keeping yourself "reasonably" clean are more important IMO. Any chamois is going to be absorbent - the amount of fluid it can absorb depends more on the thickness than the material; but thick chamois can be uncomfortable as well as obviously being less well ventilated.
Speed comes from what you put behind you. - Judi Ketteler