User Review: MSR HyperFlow Microfilter
Price Paid: $100
Even though others seem to love this filter, I have to rate it low. I had it on one trip and I couldn't even filter 2 liters of water before it plugged up to the point it was unusable. The backflushing technique did not work, even after I got back and tried flushing it with tap water.
I filtered lake water from a collapsible bucket, so silt should not have been a major problem. If I had been out for more than this short 2 day trip I would have been in trouble. Based on this performance I would not recommend this filter.