Update -
Thanks all for the advice. I purchased the sawyer gravity filter and figured a short trip was a great time to test it. River was up/muddy after a couple days of rain before we got on it. I used a bandana when filling the bag to cut that down a bit. Flow rate was decent enough and overall I preferred it to the pumps I have used previously, especially for a group. Will be using again. I was very glad that this one has the ability to backwash as even with the bandana "pre-filter" The first flush with the syringe sent out an impressive bit of sediment.
