I just returned from a ten day hunt. I wore a Rivers West jacket most of the time. It is quiet and comfortable, but the fabric does 'pill' up quite a bit. I would not recommend wearing it in the rain only because I think the outer layer would absorb too much water and take long to dry, even though the moisture would not soak through the waterproof lining.
I am VERY HAPPY with my Cabela's Silent Suede rain gear. I wore the bibs almost every day and never got wet. It is quiet, and thin enough that it won't aborb much water in the outer 'quiet' shell, dries fast, and is tough enough to wear throughout the day hunting through brush, etc. I also wore the Silent Suede jacket in the rain/snow and I was dry. No complaints here.
I know that Browning makes a good rain coat, very packable. Maybe the same stuff that Longbowz mentioned. It kept my partner dry on our entire trip. He also wore Cabela's Silent Suede bibs and stayed dry.