I bought the Hanover pull down faucet about 7 years ago.  After 4 or so years the lever that adjust the pressure of the water stream began to leak.  I contacted Pfister seeking a solution.  I was surprised  to receive a no questions asked (beyond what was expected) new replacement part. It builds confidence when a vendor stands behind their product with a lifetime warranty.  Since then I've purchased and installed 3 other Pfister faucets.  All are performing as expected and I've got high expectations.  It seems Pfister does also.