We remodeled our kitchen about 4 years ago and purchased this faucet for our main sink. After about 6 months the buttons stopped working but after a call to Kohler a new spray head was delivered and the button problem was solved. However, the laminar flow aerator caused water to frequently splash out of the sink and make mess! The spray feature works fine. What is needed is an aerator that allows an aerated water stream along with the spray. I will contact Kohler to see if such an aerator exists. It would be a big improvement.