Quiet,light,breathable? Good luck! The fact that you are willing to take it off and on and pack it is a big plus.I have spent lot's of time and money trying to find the perfect solution,I am not sure that it exists.I do like Cabela's rain suede,it isn't the lightest but it is quiet,I made a mistake a couple of years ago when I bought it I bought the jacket and the bibs.I really don't like bibs.I will likely buy the rain suede pants at some point in time.There is a company called dutch harbor that has rain gear called Dutch Tech,it is extremely light and the quietest stuff I have found for PVC type rain gear,not partcularly expensive either,about $40 per piece.I bought the pants and will use the Rain suede jacket in hard rain.I have Wolfskin two sets one lined and the other unlined.They are quite water repellent and I intend to make them more so by treating them with nikwax wash in water proofing,I am anticipating that they will be my garments 99% of the time,the rain suede and Dutch tech will only be worn in real hard rain,when an animal isn't going to hear the swoosh in your rain gears fabric any way.
Sitka gear has come out with some rain gear,their down pour series,but it is incredibly expensive,almost $300 per piece.I feel pretty good about my choices,the wolfskin getting the majority of the work.