The absolutely best dishwasher we've ever had was a Kitchenaid back when they were made in the USA. We used it for 10 years and then my wife wanted a newer model because it's a girlie thing. [smile]
It still worked well so I gave it to my neighbor and he installed it in his MIL house and it's still working 29 years later.
We replaced the Kitchenaid with an Asko...what a turd. That's one horrific product, within 2 years it was toast and it was still under warranty.
We then moved on to a Miele which I would highly recommend, it's quiet, it washes well and it's a nice piece of German equipment.
Unfortunately, after 9 years of constant use, the pump burned out and it was a $700 charge just for the parts...obviously it was time to let go.
We decided to purchase a Cove (manufactured by SubZero and Wolf) because it came with a 7 year all parts warranty. Am extremely happy with that decision, after 2 years I would purchase another one in a heart beat.
My neighbor has a stainless Bosch and it's extremely quiet although not as quiet as the Cove or the Miele.
I have to add, that we are extremely hard on dishwashers as we have 3 cats and 2 dogs and my wife insists that every meal that's served to the animals, is served in a clean dish. We're talking about 2 full loads of dishes a day, every day, 7 days a week.
I'd also echo the suggestion that you use the Miele detergent packs, they are the best available, we continue to use them in the Cove because they are the best. They DO NOT etch the glassware and clean the dishes superbly.
Etching is an issue and the Miele detergent packs prevent that. I've found that cutting the Miele detergent pack in half still provides the necessary cleansing capabilities...the Wolf tech guy told me that.