I was purchased Eureka Forbes Aquaguard RO Reviva in 2007 at Jaipur. I came to Jaipur for my Btech and after a week I observe that tap water is not cause of fluoride in water.
After that I purchase Aquagaurd. I am just call to Eureka customer care and they send to me and installed also.
Since I purchasing this I forgot the stomach problems and other problems which are facing in early days due to tap water. Water is capacity is enough for 2 people whole day drinking water requirement. It is automatic shut-down when water supply is off. Right know I am using it happy with it. I personally recommend it for average water consumption. Service support also very helpful just book a technician within 24 hr they send to your doorstep at nominal charges.