When I'm able to get back out there, I'm looking to change my drinking water situation and am on the fence as to what system I should go with. I hike the Palmetto Trail here in SC and the water would best be described as swamp water. No matter what system I end up buying, I'll first filter the water through a bandanna to get the big stuff out first. I have strongly considered the Steripen. Considering weight and function, it doesn't sound like any other system will do me any better. The available water seems to be nearly stagnet and boiling the water vigorously has been the only thing that eases my mind. I know they say that all you really need to do is bring it to a rolling boil, but I'd rather err on the side of overly cautious than ruin my time on the trail and end up using too much TP in the process. What say you folks. I'm really tired of carrying in so much water and then biting my nails as I watch my new water supply come to a boil.