Good lightweight filter - no complaints
- Familiarity: I've used it several times
I've had this filter since late spring ('12) and have used it several times over the summer on weekend backpacking trips. I haven't had any clogging/ freezing issues that were noted when this filter first came out, and the weight saving vs. some of the other filters on the market is great. Like just about every MSR product I've used, this comes apart into about 6 pieces so servicing it in the field isn't that much of a chore. When using this on a 1-2 night backpacking trip, I generally won't bother with backflushing it until I get home, unless the water is particularly dirty or I'm with a larger group. It is a little more needy than some of the other more bulky filters on the market, but I haven't had to put enough effort into keeping it going to outweigh the benefits.
One other nice touch - the outlet for fresh water fits exactly with the end of a Camelbak hose with the bite valve removed. This is great for a mid-day water break because I can refill my Camelbak without taking it out of my pack. It also reduces the likelihood of spilling water when pumping in camp.