yeah, Berkey is probably the best for the money of the larger filters, but I'm a Katadyn fan for the more portable models...
for emergencies the Aquamira Frontier (pro?) Personal Survival Water Filter Straw can be had for $10, fits in a shirt pocket, has a 2micron filter and is rated to filter 50 gallons (just think how much easier some of those 'survival' shows would be with one of those
)
for emergencies the Aquamira Frontier (pro?) Personal Survival Water Filter Straw can be had for $10, fits in a shirt pocket, has a 2micron filter and is rated to filter 50 gallons (just think how much easier some of those 'survival' shows would be with one of those