42 forum posts
My last two units have been the MSR SweetWater. Eventually broke the handle on the SweetWater, replacement unit is in need of a new filter cartridge. So instead of purchasing a new cartridge I took advantage of a sale price on the Hyperflow. Upon receiving I played around with it, took it apart, practiced the reverse flow cleaning and then as noted on the instruction sheet set it up for storage. Problem: The instruction sheet noted to do the reverse flow process daily! In the real world with relatively clear water is that really necessary? If so, saving the ~3oz and having a more compact unit is not worth it relative to the SweetWater. Which just required using the brush when things got a little slow. About ~12L on the last trip or once every 3-4 days. The Hypeflow requires taking apart and flipping two one way valves. Loose a valve or any other part and your are out of luck.
The MSR Autoflow Gravity Filter with the simple flip and let the purified water flush out the filter is looking real attractive. Similar weight as the SweetWater plus you get the dirty water carrying bag. Eliminates needing to dump the contents of a silNylon stuff sack to carry water. No need to filter at the source of your water. No moving parts to break.