Erick,
When replacing a clutch assembly you really should replace not only the plate but the pressure plate and release bearing. It's a false economy to only replace one item unless you have had an early failure of a new component.
There should be very little difference in labour costs to replace just one item and all the items, considering what has to be done.
As to the noise it could be several things unfortunately so the only way to find out is to get in there and investigate
Malc
PS I would also check that there is not a load of "Lash" in the gearbox input shaft and that the input shaft bearing is ok, and if there is one, the one in the flywheel (somebody here will know)