I considered a Berkey but eventually went with a reverse osmosis filter for several reasons: - Electricity is not a concern. - Wasn't sure if the Berkey removes the really small things: xeno-estrogen and fluoride. Fluoride is really hard to remove, even reverse osmosis can only remove 60-80% of it. - A reverse osmosis machine can also work as a kettle, producing either ambient temperature or boiling water on demand. Most people don't like reverse osmosis because it demineralizes the water, but a good system as an 'insertion filter' (basically a jar filled with calcium and magnesium balls that the water goes through) which remineralizes it after the osmosis as taken place. I would go with a Berkey in any other situation except for my home kitchen.