User Review: MSR MiniWorks EX
This filter is okay. The bad little ex-soldier in me was attracted to it because you can easily field strip it for maintenance. Unfortunately, I find it needs a lot of this. It clogs often and pumps VERY SLOWLY, even in very clear water conditions. I eventually replaced the filter element to see if it would improve with no such luck.
My other filter is a Katadyn Hiker. It's the filter I actually use. It's lighter, more compact, and pumps faster. The MiniWorks is not that bad, but it's not that good either. It's become my loaner for friends who don't have a filter.