I can only tell you about my experience with the Petzel E+ light. I have been using one now for over a year and have had good service with it. I most recently used it in hiking the JMT and, in particular, lighting my way from Guitar Lake up Mt. Whitney from a 3:00 am start. I had previously dropped the light into a pot of water that was on the stove (fortunately still cold) and it recovered with no problems at all. I'm not sure that this inadvertent test is comparable with being used in a PNW rainstorm but it does suggest that they are reasonably water resistant. Good battery life too!