We were determined to move away from the expense and waste of bottled water, but did not like the taste of the water from our faucet or even our refrigerator that is "filtered".  To make this move we decided to invest in a water filtration system.  The Kraus - 2-stage carbon block under sink filtration system seems like the best to us and we are very pleased.   The unit was fairly easy to install (given the small amount of space under the kitchen sink) and it seems easy to maintain with the filters being easily replaced every six months or so.  The digital display is easy to read.   And...best of all...the water tastes and smells great.  We feel like we are getting better water and helping the environment all at the same time.  Win...win!