I have owned the original system for over 13y. It’s easy to use and replace cartridges when needed and R/O membrane. This unit never leaked when I installed it correctly...lol. The tank was large enough for all my needs, filling a pot, making a gallon of ice tea, filling my wife’s coffee maker, or a single drink of great tasting water, and even to top off my fish tanks. They probably won’t leave this on the review but, I also tapped off the return line to the facet and ran the line to my fridge ice maker! Never bought another over price manufactured refrigerator filter again!