Product review (5 stars): Samsung DMT400RHS Rocks!  Well, it's actually very stable and quiet ;)
Guess I'm the first here to review the Samsung DMT400RHS.  Some background first.  We purchased our house new about 10 years ago.  The original appliances (dishwasher and stove) were low end Kenmore.  REALLY low end Kenmore.  Although both the electric range and dishwasher were still functional we decided it would be nice to upgrade with new equipment.  I began searching for a new dishwasher about a year ago.  Almost pulled the trigger on a high end LG but was reluctant as it was expensive (on sale at $799) and the reviews were all over the place.  They ranged from it being the greatest dishwasher ever to being junk.  I passed and kept looking.  Well, President's Day sales came along and there were some good deals out there especially at the big box stores.  (NOTE: I did not purchase the Samsung from Amazon.  I love Amazon but the price at the box store was just too good to pass up.)  I kept searching the net and reading reviews, lots of reviews.  Talked to my wife and she said, "ok, but just don't buy the most expensive one as we think we'll be moving in another 4 yrs.  Just get a good middle of the road model."  I narrowed my search down to two brands, Bosch and Samsung.  Both had good products with low noise levels (51db for the Samsung), stainless steel interiors, food disposer, energy efficient, leakage detection, and low water consumption (4.7 gal/load I believe).  Both brands were good looking and seemed to be solidly built and both had units that were stainless steel exteriors.  One other feature that I thought I wanted was a delayed start.  How many times have I started the old noisy dishwasher right before going to bed and had to listen to the whoooossssh and clank as it ran through its motions right next to our bedroom.  Arrrrrrrrrrrrrggggggggh!  After reading a bunch of reviews  I decided on the Samsung DMT400RHS.  It was a notch down from the top of the line which meant it was a bit easier on the wallet but it didn't have the time delay feature.  Hey, it's supposed to be quiet.  At least all the reviews I read said so.  Well, that home improvement store that sponsors Jimmy Johnson had it in stock but another big box had it too and was considerably cheaper.  Called Big Box #1 and asked if they priced matched and they said yes.  Off to the store with printed documentation of the cheaper price at Big Box #2 (S**rs).  They said that they only priced matched if it was in stock and it was and they gave me that price and an additional 10% off.  I also purchased a Samsung Electric Range FTQ353IWUX (review later when we've had some time with the range)with the same documentation.  THEN, they had a deal where if you purchased a "tax gift card" they would credit you back 10% of the amount on the gift card on 18 Mar 11.  Got the total price for the two plus installation on the dishwasher and bought a gift card for that amount and used it for the purchase.  On Mar 18 I'll get a credit and probably go buy a new weedeater.  Ok, back to the dishwasher.  I wasn't home for the install but my wife noticed the difference between the old and the new immediately.  The old Kenmore was cheap.  There's just no other way to describe it.  When the plumber was pulling the old one out she noted that it was just a shell with some hoses and weighed practically nothing.  The Samsung was a different story.  First, it was heavy, second it was enclosed.  Score 1 for the Samsung.  The unit comes with some side plates and a kick plate and when installed looks great.  Score 2 for the Samsung.  This thing is solid.  You open the door and it doesn't fall down like the old one, you have to lower it down.  It closes with a solid feeling something like closing the door of a good car.  No latches to slide you just close it.  The controls (hidden) are on the top edge of the door and I thought that might be a problem as there isn't any room to get to them with the door closed.  Not a problem, before closing the door you set the controls.  Power button (all are touch sensitive) press and wait for the chimes and the other buttons to light up.  Select the wash setting (I've be using automatic but you have the option of normal, heavy or delicate), and then select "sanitize" (heats up the rinse water to 162F) if you wish.  Close the door and the three blue progress lights on the front of the door light up and then just the first stays illuminated indication "washing".  Light #2 indicates dry and light # 3 indicates clean.  So, how does it clean?  AWESOME!  Glasses, dishes and dinnerware come out great.  This dishwasher is so cooooooooool, I just want to find stuff to put in it so I can run the darn thing.

A couple of things to note.  First, there is a bit of learning curve to loading this thing.  The racks are laid out a bit differently than our old washer so I have to think about how I'm putting stuff in.  No real problem as there is a lot of room.  The upper rack is a bit different as it is "tiered", has four rows and each is a bit different in height.  Short glasses on the left and progressively taller ones to the right.  The top rack also has some plastic holders for stemware.  Nice touch there.  Hmmm, is it Score 3 for Samsung?  The dinnerware holders are a bit different too.  They have lids with cutouts so you place your knives and forks in them or not.  You can flip the top up for stuff that won't fit the holes.  Another thing that takes some getting accustomed to is the wash times.  I think all these new dishwashers take a long time to go through their cycles.  I believe that it's due to their low water consumption.  Whatever, don't expect to put your dishes in and turn it on and be ready in an hour.  Think the was times are closer to 2 or 2.5 hrs.  Doesn't really matter as we usually run it before bed time.  Something that will also take some getting used to is the rinse aid bin.  Now we've always used the 3-in-1 dishwashing tabs (yes, they fit in the detergent bin) that include the rinse aid but the Samsung has a separate bin to put liquid rinse aid in.  I've used the same tabs and they seem to work fine but the indicators on the top lid show a "low rinse aid" if the bin is empty.  Hmmmm, don't want to burn out the light but do I really need to add a liquid rinse aid if I'm using the 3-in-1 tabs??????  Lastly, my concern about not getting the delay start......no problem.  This thing is quiet, I mean really quiet.  There is no "whoooooooooossssssssh" or "clank" or "bonk".  Used to be you couldn't have a normal conversation in the kitchen with the old dishwasher now you could put a sleeping baby in crib next to the Samsung and not wake'em up.  Sweet.

 As you can tell, I heartily recommend the Samsung DMT400RHS.  It looks great (buy some stainless steel wipes to keep it that way), it's super quiet, it cleans great, good feature set,  and it was at the right price.  There are two more Samsung dishwashers, one above this one (DMT 800) and one below (DMT 300) that you might consider depending on features and price.  Additionally, the DMT400 comes in black or white and both are a bit cheaper than the stainless steel.  You won't go wrong with this one.  Cheers

04/03/11
  Update.  Everything is working great.  The Samsung is still quiet and we are learning a bit more about loading.  One thing I have learned is not to load large plates on the bottom rack below the detergent dispenser.  We have a set of plates that are square and quiet large.  Made the mistake of loading them on the lower left side front right below the detergent dispenser.  After the wash was finished I opened the door and the dispenser flap popped open and out came a slightly used washing tab.  The large plate had interfered with the dispenser opening properly. Oh well, adjusted the load so that smaller plates were left front and ran the wash again.  Problem solved.  Other than that, everything is fine.  The Samsung still is very quiet, especially when running a full load.  A bit more noise when half full or loaded with some large glass bowls.  Funny, but when I first started looking for a new dishwasher I thought that Bosch was great.  You know how when you go back to the Amazon page they list all kinds of stuff in the same category that you have been looking at and they listed a couple of Bosch dishwashers.  Well, just checked them out and was surprised when I checked some reviews of similarly priced models to the Samsung and there were complaints regarding build quality ie the stainless steel interior being flimsy.  No complaints here.  The Samsung has a great build both inside and out.  I haven't tried any of the wash cycles other than auto and sanitize so I can't comment on that.  Might have to check them out.  Anyway, I'm loving the Samsung.  I'll turn it on at night and head to bed and TELL my wife that the dishwasher is on :).

One of the things I love about Amazon are the reviews so I try and add to them hoping that it will help someone else make a good decision.  If anyone has any questions/comments, send 'em and I'll answer.  Kind of surprised that nobody else has reviewed this model.  Kinda lonely being the "one".