After a little research on our options, purchasing a Berkey Light has been a goal of ours for almost a year. Not only is it good for home use, it's also recommended for outdoors, travel and emergency use.
Our Berkey really became necessary after spending about $5 week on purified store bought water for our family. This equals over $260 per year, which more than pays for this filtration system that can purify over 6,000 gallons of water per set of filters. In addition, we're saving lots of waste from our previous used plastic water bottles that started piling up in the garage.
If you're interested in learning more, you can check out this 2+ minute video:
http://www.youtube.com/watch?v=PvfNE0x9l9U