I purchased Kent Grand + which was perhaps the worst mistake I would have ever made. In 2 months it had multiple issues and I had to keep on calling the customer care for service.
To make it worse, the customer care people and their so called technicians are a bunch of idiots. Neither do they respond to the calls properly and when their technicians come, they do some temporary fix and the problem remains.
My advice to all you guys planning to buy a purifier... Just avoid Kent or else your purifier will become a headache for you.