Product review (4 stars): Dishes and glasses come out spotless!
Floor Model Cost: ~$700+ tax
Installation Cost: (includes delivery of new model & haul away of old model)  < $200 (including tax) as needed extra length water connectors and add'l labor to left of sink past pull out wastebasket cabinet

My experience is with a clearance floor model connected by an experienced installer who took his time to install it properly.  He followed the installation guide instructions (you can download those from the KitchenAid website) and made sure the unit was properly balanced adjusting the two front legs with the bottom dishwasher drawer removed, then again checking it after the bottom drawer was put into position and engaged.  The unit MUST be level to work properly.  He made sure the model was secured into position.  Anyone who has drawers opening mid-cycle likely does not have the model absolutely level and that is NOT the mfgr's fault!
BTW, the connectors are located on the side of the unit--as you face it, they will be on the LEFT side.  This would be easiest for installing to the right of your sink as you face your sink, but can be installed to the left of your sink as the hoses are long enough to even go behind a pull out wastebasket cabinet.

I find the externally attractive two dish drawers very, very easy to use, especially the top drawer for anyone with back issues when they first get up and yet still needs to unload the machine if it was run in the night.  One only has to be careful not to accidentally press the touch sensitive control panel when loading or unloading items, but cancel works well ;)  Each drawer has the same extensive touch sensitive control panel set up.

These dish drawers will come in at 56 DB, around the same DB as the 12 yr old dishwasher that had to be replaced.  Mid-range single door dishwashers with stainless steel interiors come in around 49 DB.  High-end single door stainless steel interior type dishwashers will vary in DB and some go as low as 43 DB for the TOL model level.  I have a French Country Kitchen-Family Room combo area that is very large, so any sound made by the dish drawers is not an issue for us--we go into the living room and we can hear the TV in there just fine, or more often, I run the dish drawers during the night when we are asleep on another level at the other end of the house.  I can, however, work just fine in the Family Room area with the dish drawers running in the background.

Ten key points to keep in mind:

1)  Your hot water temperature for your sink faucet should be 120 degrees F and run it (then turn it off) so the water going to the dishwasher drawers is very warm before starting either dish drawer;
2)  Fresh, powdered detergent is the preferred type of dishwasher detergent to use with this model; most Americans have hard water; if you do, be sure to fill to the hard water level in both pre-wash & main wash for each dish drawer; NEVER use less than 1 Tbsp per load;
3)  Use Rinse Aid of some type as the drawers are plastic (we all know stainless steel interiors dry the best so plastic needs a little more help); the default rinse aid setting is 3; if you adjust that down, then expect to need to towel dry some dishes, especially plastics;  there is an indicator light for a low level of rinse aid--refill as needed;
4)  Sensor cycle works quite well;  there are two double-sided silverware holders total for the two drawers and load tines and knife points face down;
5)  You can use Pro-Dry option for all cycles except the 30 minute Quick Cleanup cycle (I like this cycle for pots and pans that only had liquids cooking in them);
6)  Sani-rinse is a great option to always use;
7)  Always load items correctly-- soiled pot & pan surfaces facing horizontally DOWN for the bottom of the drawer spray arm access, or frying pan or plate surfaces loaded vertically into the rack inserts (be sure not to block the Pro Wash Bar sprayer in the top back of either drawer);  I load items as I go along throughout a day or evening cooking spree and run the first drawer that fills up when it fills up and then start loading items into the next drawer; sometimes I fill up & run both drawers concurrently; if items need to accumulate overnight into the next day and then you plan to run either or both full drawers, do run the rinse cycle for each partially filled drawer before going to bed;
8)  Never overlap plates or bowls;  Dishwasher safe plastics really will be safe in either dish drawer in my experience.
9)  Remove the rack inserts when you have larger pots and pans to wash--it is so easy to take the rack inserts out;  I find these drawers very, very easy to load and unload;
10)  If you choose the High Temp Scrub Option, you MUST allow the dry fan to run for the extended 3.5 hrs; you cannot use the High Temp Scrub option with Light/China cycle; you should use the High Temp Scrub option with the Heavy Duty cycle.

Because one can accidentally touch the very sensitive touch control panels when loading or unloading either drawer and because one must be very careful when filling the narrow detergent and rinse aid compartments for each drawer, I rated the model 4 out of 5 stars.