The other filter question "UV vs. FILTER vs. CHEMICAL" is way over my head. I spend my time hiking in MD, VA, PA, and ME. I try to run 3-4 day trips but looking forward to some 5-10 hikes in the near future. I have been looking at the Katadyn filters but with most of the water sources I am using flowing right out of the pipe I am not real sure if these will fly. I carry my water sometimes in a reservoir and sometime 2 or 3 bottles. I was thinking about the Katadyn Vario Microfilter. Any thoughts?