If you are having problem with quality of water in ur area this purifier would be the much needed thing in ur house, I am not saying its the best but considering factors like no requirement of external power source or low maintenance, ease to use and not electical part which is prone to damage easily.
This package is very basic yet very effective to deal with you issues. Price is also very cheap and once you buy this only thing that you need to do is buy refilling kit whenever required. I bought this at my native place where there was some issue with water quality. Please this product is useless just like many other products in market if water that you are trying to treat is hard water.