Kent ro prime is the beat ro purifer.
I am using this from about 6 months and no problem at all before that I have a uv filter and we were using it but after some time my family starts facing problem such as stomachache, etc so we visited doctor and he said its because of water. So immediately I bought this kent purifer though it is priced bit higher but trust me it is the best. It also has 15ltr storage tank and I have compared it with many other purifer such as pureitarwella ro and that doesn’t comes with tds filter and it also need electricity 24 hrs for taking water from storage tank and in kent it auto shut off after refill of tank