I've had a pair of microtex pants in outfitter camo for three years now. They are very durable in the tough oakbrush and mountain mahogony that I hunt Colorado in. They are quiet, especially after I put some plastidip on the bar tack/rivets that my rifle stock would rub on making man sounds. They are cut large and are not especially ergonomic for a slim guy. That said I bought a pair of Sitka Gear Ascent pants with four way stretch nylon in optifade camo. They are the most comfortable and quiet pants I've ever owned and they are the ones I wear first, at twice the price of the microtex pants they had better be.
Both are synthetic and dry quickly.
BeanGrinch