Free: Contests & Raffles.
I have the OR Crocodile gaiters that are bulletproof but loud. I got a set of Kenetrek's and second the quietness. The material strength wouldn't compare to OR, but it's a trade off.
I have the OR Crocs and a pair of the Cabelas extreme something or others. They work well and are relatively quiet. The Crocs are totally bombproof but are noisy in the brush. I wear gaiters 90% of the time.
Bow or rifle? Brush country or more open terrain? If noise is a concern I always go for the kenetrek. But they do not hold up as well or keep water out as well as crocs imo. I have also had the cabelas extreme, and the newer gaiter they have, part of the instinct line. The extremes were a good gaiter for the cost. Not as durable as the croc or quiet as the kenny but half the price. And worked well. The instinct has been durable and would be decent if not for the rubber strap buckleless system they use. The strap comes loose costantly. Its so bad i removed them which makes the gaiter usless for serious use. But its still serves its purpose if the weather is bad and i dont anticipate any big water or snow.