I'm fairly pedestrian, a big +1 for Life Straw. I really would like a Katadyn unit though. A couple of you guys have posted some stuff that I have never seen or given thought to, [mind = blown]. I'm sandwiched between the largest blackwater swamp in North America and the Atlantic coast. Like @anrkst6973 I can't go in any direction without stepping in water, whether I like it or not. I recently decided to pack a portable stove in case I need to boil some off. So far it just makes coffee .