We use this product for all our drinking and coffee water. Love it! Wish it had adapters on the main body so you could use stainless connectors rather than push in plastic, they work well though.
The box contained all that is needed to install. The installation difficulty is dependent on what gets in the way under the sink. The sink space, disposal, and sink shape added a lot of time to my install. There were no leaks but it needed to run water longer than expected to get a good clean taste from the water. The pour is slower than desired but probably good for a 3-filter system. I expect it to be easy to change the filters but haven't done that yet. The product is used to provide clean water for cooking and rinsing in the kitchen.
I purchased the 3 stage undercounter filter and could not be happier! The quality of the water is wonderful and the taste is much improved from standard city water. I upgraded from a Pur filter and the difference is very noticeable. The install was easy and all the needed parts are provided. We are very happy with our new filter system. Be sure to sign up for the "Water for Life" program to get discounted replacement filters and free replacement space parts. You will not be disappointed!
Pros: Clean taste, Durable, Easy to clean, Easy to install, Long lasting filter