I am using Kent Ro Grand Plus almost 4.5 years back. No complains. Got the filters changed once. The water quality is great. The service centre were very quick to respond to calls. We did not get sick because of water quality after purchase of this filter. This is one of few water purifier which has UF along with RO & UV. UF & UV it is the most effective way to filter out harmful microbes and some large solid wastes.
Today I am real proud owner of Kent and I will suggest everyone to go for KENT.