I can't answer the vibration/noise question, but I installed a small accumulator tank to ease the water pump from cycling every time water was used... to extend the pump lifespan and ease the instant vrup.vrup.vrup pump sound (annoys me).
We boondock extensively and I don't like wasting water, needless fresh water into a tank, and always relieve pressure via a faucet before turning the ABCO Valve to fill. A 5 gallon tank would be mega-overkill for me for wasting water and time waiting for all house pressure to bleed off to turn the ABCO...just my preference.