I have been a Moen customer since the 70's.  It is rare that these faucets have to be replaced or repaired.  The fact that the part that keeps them going is furnished free when it finally wears out is a first in any product that I have.  I really love the Moen products and wish others had as good a product as Moen has.  I will be replacing my kitchen faucet soon, simply because the styles have changed.  Thanks, Moen!