Lots of times the excess noise is due to the installation. The factory usually connects the pump directly to the pex water lines. These are a hard plastic, that will transmit any pump movement down the water line. It can be really bad if the pex is close to a cupboard etc. as it can actually vibrate against it.
The solution is to isolate the pump from the pex by installing flexible lines in a loop from the pump to the pex.
There is actually a water pump silencing kit available that has everything needed.
Or you can go to Home Depot and get the lines and fittings needed to save a few bucks.