As I have used pureit classic water purifier, so the thing that i’m gonna tell is my personal experience .
Recently I have relocated to delhi from rajasthan for just a year, so decided to buy a cheap but good water purifier for and finally after some research I found that pureit is the best in class but things gone opposite for me.
I need to change the filter twice a month, because any problem occurs company says that you need to change the filter to rectify this.
So overall I had a very bad experience with pureit so for me it is a not buy product.