If you want quiet... Miele
Gary,
Many dishwashers out there do a fine job of cleaning dishes. And we all choose our appliances based upon a number of personal factors. That being said a couple of "soft" factors have me sold on Miele.
First... you can't hear it running with a mimimum of background noise. I tend to entertain with dinner parties. After I am finished with food preparation and the drinks/appetizer course, there are generally enough dishes to fill the machine. (Alas, I do not have a two dishwasher kitchen!) It's great to be able to wash the first load while the rest of dinner unfolds over the evening. More than once a guest has opened the machine and been very surprised to discover that it is running. It's that quiet.
Second... I like the silverware rack. If frees up more space for dirty things on the lower rack. Once you grow accustomed to loading it, you will spend hardly any more time loading it than the normal basket style rack. And nesting of utensils is never an issue with this style rack. Now here's the nice thing... If you load utensils of a given type in one area of the rack (e.g. forks in one area, knives in another, tablespoons, in another, etc.), you don't have to sort while unloading, so unloading takes seconds.
I don't think you'll go wrong with any of the other recommendations above, but I have owned Kenmore, KitchenAid, Maytag, and Miele. All other factors being equal I would choose Miele again.
Good luck and happy shopping!
John.