Negative Positive
Title: Sloooow...
Review: Several friends and I recently did a 4-day trip in the Bitterroot Mountains. One friend brought his Katadyn pump and I brought this MSR. Both filters provided clean and clear water (though it's hard not to in the mountains of Montana), but his Katadyn was much much much faster than this pump. Pumping at regular speeds, he was able to fill three 32 oz bottles in the time it took me to fill one. By the end of the trip, everyone, including myself, was using his pump exclusively. It has yet to be seen how well his filter holds up vs mine and how well the product itself stands up to the abuse of being stuffed in a backpack over and over again. However, based on what I know now about the speed alone, if I could make the choice all over again, I'd go with the Katadyn.
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