User Review: MSR MiniWorks EX
Seems robust enough. My only real issue was speed. After just a few liters, it slowed waaaay down. Even after scrubbing, the speed just wasn't there.
The water was clear (John Muir Trail/Kearsrge Pass) and cool, but it felt like we were filtering water in Thailand (nukes filters in minutes). I will say that disassembly was a snap, and the lever arm was plenty stiff. It will work just fine, but it just takes some patience.
For the price, she is just fine. Don't pump it lickety-split either, just mellow pumping does the trick.