You need to understand that clutch chatter is different from car to car and that you cannot compare a N55 transmission of a 1M with the N54 transmission- we´ve sold over 30 clutches and all in all n55 transmission were way less loud concerning rattle in comparison to the n54 ones.
Also, like i said, its really different from car to car because it´s based on the condition of your gearbox as well as how smooth your engine is idling...
Then another factor is the balancing of the clutch package- we for example balance the whole thing together....
Just FYI, because i read that people keep saying "it will be quite" here when in reality you just cannot ensure that, since its really totally depending on the car and even more on the transmission which is used!
Also an engine which was fully rebuild with crankshaft and harmonic balancer etc. etc. will be 100times smoother and less loud then a stock one...