I have purchased Kent superstar 8 ltrs RO before six years as I was living in daman and water was so hard. After purchasing kent RO at the cost of 15, 500 Rs. This RO is really good for healthy mineral water. It has indicator system which shows laves of water in tank. It provides UV bulb. It has low maintenance cost as well. Kent superstar RO has also alarm system when filter needs to be changed. This RO really softens hard water. Also it is maintaining PH as I have checked through PH strips. Also oy provides facility to evoparate all kind of smells. Really we should use this RO for healthy family life.