I live on a farm where it rains 100 inches per year. I have had cheap boots last less than one season. I only buy Xtratuf boots now. They are flexible enough to walk in comfortably, and they last longer than anything else. As mentioned in a previous post, they are what fishermen and cannery workers wear, and they should know. If you do get a leak in the uppers, a little Shoe Goo will take care of it.
Andrew