The Bosch dishwashers are indeed very quiet and very reliable, we had them in office conference rooms years ago when they were about 3 times the cost of a home machine. Now they are priced more reasonably.
Something to watch for/consider: Many modern dishwashers do not have water heaters any more and rely on the household hot water heater, it's part of the energy efficiency. They also use less water for that efficiency but that is resolved by swirling it around faster/harder and longer than in the past.
With the Bosch my mom put in a couple of years ago the installer told us to make sure the water was running hot at the tap next to the dishwasher because that would save a lot of time. Otherwise the dishwasher takes tiny sips of the water in the line until it is hot enough to use. When I did a test starting with cold water, it did add an hour to the expected 2 hour cycle.
My current dishwasher is on the way out but I haven't decided on a replacement yet. I do like the stainless interiors... I've found I'm actually rather fussy about some of the interior layouts, particularly the cutlery trays.