I had a Bosch that was so quiet that even standing next to it, you had to look for the red light. However, their filter system. Gets very smelly every couple weeks. Smells like something died in the dishwasher. You have to remove the bottom rack to get. To the filter to rinse it out. A real PITA.
Before that, I had an inexpensive GE, now I have an expensive GE. Both are extremely quiet, without the odor problem. My kitchen is open to the living room, and I cant hear it.
Unless you are looking for one of those $2000 machines, the GE is a good bet.