The LifeStraw Personal is a 0.2 micron filter, and claims to filter 264 gallons of water. The Sawyer is a 0.1 micron filter and claims to filter 100,000 gallons. That's 400x what the Personal claims, and the Sawyer has a smaller pore size. That claim is a little hard to believe, but maybe true. I guess if you backwash if many many many times...

The Sawyer is much smaller than the Personal. The Personal and the Sawyer do not do viruses. They cost the same.

The LifeStraw Family (the one I was talking about in the initial post in this thread) is a 0.02 micron filter and claims to filter 18,000 liters of water. The Family does do viruses.

The Personal would be a competitor for the Sawyer, the Family is really a different class of filter.