I can't give a specific recommendation to the brand. I would think all the major brands work fine. I like gravity filtering (I made my own w/ Sawyer mini) but I also carry a pump and tablets. I'll carry all in the truck and I'll always have tablets on me. The decision between the pump and the gravity filter comes down to how much water I expect to pump and how long I'll be there. The gravity setup is a little heavier and slower (but less effort) so I'll bring it when I plan to stay at least a day somewhere or I am filtering for multiple people. I'll use the pump if I'm looking to shave ounces. I hate pumping, though.