Figured I'd revive an old thread rather than start a new one for the same subject.
Back about 8 months ago, my mother-in-law's fiance had a house built, and the appliances they installed were stainless steel Whirlpool's, the dishwasher being a MOL model with the slate plastic tub, and of course the filter. They couldn't get the thing to produce clean dishes no matter what they did (a lot was indeed user error, but I had to give them a 101 lesson on loading a dishwasher. They would put a handful of silverware FACE DOWN in a single compartment, and then complain that there was food stuck between them. I told them there's a reason for the little stemware dividers lol.) After about 4-5 months, literally nothing would work, despite my loading advice, showing them to run the hot water before starting, and to use a heavier cycle and hi temp options when they had more soiled dishes. Even after almost 4 hour cycles, the dishes would have a grimy feeling, and food bits would still be on many items. They complained and finally were offered a replacement through the appliance dealer, so I advised them to get one of the newly-released Maytags.
Here it's been about 3-4 months since the exchange, and every time I'm over, they rave about how well the machine performs. I still have to give them little tidbits of dos and don'ts, but other than that, they haven't complained. The machine is dead quiet, almost too quiet for my taste, despite having the large motor and disposal blades. The cycles are much longer than my Voyager Maytag, but they don't seem concerned because the only way to know it is actually running is to put your ear against it, or of course look at the timer. When the door is opened, there is a shower of water falling, and both wash arms will be coasting to a stop. If I didn't have two beautiful machines in perfect condition at the moment, I'd almost be tempted to buy one!!