I am a user of Kent Ro Wonder. The water taste so pure and good. Its much better than the packed bisleri mineral bottle. At-least my family feels that way. The taste itself is a live proof of its awesomeness. We have been using it since the last 3 years and we have not a single complaint.
It has both the RO and UV technology. It do have technology to tackle lead .and other harmful stuff without affecting the minerals in water. In addition you get free service and the employers are really friendly and punctual.