User Review: MSR MiniWorks EX
Price Paid: $85
I bought this filter after my First Need Purifier crapped out after 5+ years of use. Used the MSR on two overnight camping trips. Midway through the second trip the unit became very hard to pump, with most of the water going straight back down the tube from where it came. The water being filtered on both occasions was very clear.
MSR advertises that this filter is "field maintainable," but what they don't mention is that you need to "field maintain" it very frequently (by disassembling the unit and scrubbing the ceramic element) in order to keep it up to performance. I'm coming from just having used the First Need, which by comparison flows much faster than the MSR filter.
Long story short, I'm returning the MSR and picking up another First Need.