I, too, have Sugoi Resistors, and the same PI winter boots as Lynne (no surprise there, I know). In plain ol' everyday rain - you know, the kind that stops every once in a while -- my feet stay warm and dry. If the rain never lets up, I can get about 60 miles before my socks start to get wet. When it rains as hard as it did sometimes last Saturday, the wetness starts earlier, but I never have the enormous lakes of water I used to get in my old Shimano MTB shoes. Yesterday, I managed to go about 66 miles before the water crept in.