Yes, we have a Kitchenaid that is very quiet, it replaced the noisy, leaky GE that came with the house. It is run every evening even though there are only two of us here. DW rinses everything, I just scrape off the big chunks. No difference in the outcome.
Now, I love my DW dearly, but I have never in my life seen anyone who could dirty a stack of dishes like she does. On the rare occasions when I eat a microwaved meal, I'll just eat out of the container it came in and dirty only a fork and perhaps a knife.
Not DW! She eats a lot of those prepared Jenny Craig meals
(whole 'nother topic) and will heat it, then transfer every bit to another small plate, which then has to go onto a larger plate, and then get a glass of iced tea or something. Oh, and every time she gets a glass of tea, that goes into a fresh glass. I drink mostly tap water during the day and I'll just leave one glass on the counter and drink out of that all day, then into the dishwasher it goes.
So... by the end of the day the dishwasher is completely full, for only two people! If DW goes on an extended babysitting mission for a span of days, I'll run the dishwasher about every five days or so and that's mostly a half load just to run it so the seals don't dry out and stuff.