My main water treatment is boiling. First, because it costs me nothing, second because I might be melting snow.

I carried Aquamira as a backup, but did not need to use it.

I owned Sawyer Gravity,but did not like its speed - too slow for me for a quick refill on a stop, and if it's a longer stop - I can boil. Replaced it with Sawyer Mini for a quick refill of the water and think it is perfect for me, and I will use it every trip.