One caveat - if you need to kill viruses (which shouldn't generally be the case in North America), then most filters including the Sawyer Squeeze will be lacking. The SteriPen will, however, kill viruses.

Late last month I took a group of 11 backpacking and climbing in Colorado. I brought my Sawyer Squeeze and someone else brought a SteriPen. There were also a couple of pump filters. I didn't bring my SteriPen since we had such a large group and feel it is better suited for one or two.

Well the battery turned out to be low in the SteriPen and he did not have a replacement, so it was a door stop for the trip. I had set up the Sawyer as a gravity filter and it really got a workout such that it had to be cleaned several times with the gunk that was tried to put through it. The pump filters didn't seem to be much of a favorite as evidenced by only being used by their owners and not all the time it appeared.