I want a loud dishwaher because that means that there is a food disposal in it and it will get the dishes cleaner.
The Bosch dishwashers have sound insulation 365 degrees and do grind up food waste. You just dont hear it. They wash better than other ones. They dont melt plastic. They are just plain better. They cost more. They optically measure the turbidity of the water and adjust wash cycles accordingly. Mechanically they last. You can stick to your loud ones if you want. I prefer clean dishes. Since getting the Bosch I leave the kitchen till the morning. I just rinse the plates and pots and pans and throw them in. Come out squeaky clean.