I've been looking at water filters recently and I am torn between the MSR MiniWorks EX and the MSR SweetWater. Both have the same micron level filtration, both cost the same. The SweetWater comes with a Chlorine based liquid that you can add to your water to kill even more (if you know the stuff you are drinking is really nasty). Really... it looks like the difference comes down to the actual filter. Ceramic vs. Carbon based. I've read somewhere... can't find the link that one is easier to clean in the field, but the other handles colder temperatures without breaking... So based on materials, I would assume the ceramic is easier to field clean, but doesn't handle the cold as well. Does anyone know anything about that? Of the two filters mentioned, which do you suggest? I know some might mention the katadyn hiker pro -- I looked at it, but it only has a 0.3 micron filter instead of the 0.2 micron of the MSRs.