2 Questions. 1) I have a KWC Domo faucet (brand new) that has a knocking noise when you turn on the water. It has a delta style handle and makes a one knock noise when you lift the handle. The plumber says that the water pressure is fine (it’s at 72 psi) and that the pressure is not the cause – he said that it’s something within the faucet. Any ideas on what it could be? 2) At that level of faucet (I paid $450 for it – brushed nickel plated) what are the best brands – quality and looks wise?