I'm thinking through a new system (for me) for filtering water. I'd decided on a Steripen with a 1 1/2 liter wide mouth soft water bottle. I want to use this system for easy and quick hydration while moving during the day. Great!
But then I realized that the Sawyer squeeze could work with a soft platy bottle. Having never used a Sawyer I wonder about its flow rate--others have compared it to a Katydyn squeeze bottle. A bit slow, but not a deal breaker. However, I wonder about the small mouth water bottle for filling.
I'm probably over-thinking this. On paper, for my purposes, a wide mouth soft water bottle that fits in my belly pack along with a Steripen, seems less complicated than a small mouth bottle that fills slowly combined with the possibly slow flow of a Sawyer. Also, no gasket problems with the Steripen, which I've read about in Sawyer reviews!
As for the Steripen reliability, an REI employee suggested using one for several days before going out backpacking. The thinking is that bad electronics will show up pretty fast and one could replace the Steripen if it's faulty for a new one or something else. This seems reasonable. You obviously want a good unit.
Again, I want to use this for filtering small amounts (1-2 liters) of clear Sierra water at a time. I'll carry extra batteries if I go with the Steripen.