I purchased this unit because I wanted better filtration than the competition plus it included a TDS meter to check on when to replace the filter instead of guessing on number of gallons used or date.  My only complaint is that getting the top section which holds the filter is very difficult to separate from the base.  The fit is so tight that it forms a vacuum when trying to pry the two sections apart.  Other than that, the filtered water tastes great and having the meter ensures that I get maximum life from each filter.