Pureit classic is the no.1 for the health.when requsted for the demo no one turned up for almost a week and once they torn up they got a diffrent model than asked for .i am using purit and I like it very much becaus it is a very easy to use .the charcoal inside the machine purifies the water and give clean and poure water .i like machins shape, size , colour and loke it is a make life easy and beautiful .