My brown bear guide for 2016 recommends either Sitka or Swazi out of New Zealand, the latter being outrageously expensive. We will be using Sitka. He also suggests Helly-Hansen Impertech, particularly if the Goretex coat is not Sitka or Swazi and is more than a couple of years old. He also suggests lightweight chest waders with wading boots. It will be what we use. I expect to have rain at least 50% of the time.