I'm a huge Filson fan, for wool. But when it comes to staying dry, the best I've ever seen is Simm's Gore-Tex wading coat. I've had several gore-tex coats, wax "oilskin" and the rubber type. The Simm's never leaks and still lets the sweat evaporate so you don't get that clammy, damp, cold that goes to the bone.