Product review (4 stars): I only wish I'd bought it sooner!
I am a sixth year physics graduate student.  I wish I had known a countertop dishwasher existed sooner!  I actually do my dishes now!  This would have been a Godsend when I was preparing for my qualifying exam, and I will love having it as I'm writing up my thesis.  Mainly it gets 4 stars because it exists and there seem to be few competitors - I do have some complaints about the design.

So far I have had no problems using it.  It is a cheap, old-style dishwasher - unlike the newest, coolest full sized dishwashers, it is not good at getting chunks of food off and you need to rinse dishes thoroughly before you run it.  Nothing that is not water-soluble should be left on the dishes when you put the dishes in or else it will end up on the "clean" dishes.  This isn't so much a design flaw as a feature of a cheap, simple dishwasher.

Here are the design flaws:
1.  The hose to connect the dishwasher to the sink is shorter than I would like (4.5 feet) and starts on the right side of the dishwasher in the back.  4.5' would sound like enough, but if you want the dish washer on the right side of the sink, you have 2.5 ' of hose left, roughly, which means it has to be within about 18" of the right side of the sink.  (You need some slack on the hose because it has to hang below the sink without much tension.)  You can't put it on a counter across from the sink and you can't tuck it in an out of the way place which is not within about 18" of the sink.  You couldn't put it under most sinks, for instance.  If you can't put it within 18" to the right of your sink or about 2.5' to the left of the sink, you should seriously consider getting a cart to put it on so you can roll it up to the sink when you're using it.  This is a serious concern if you're in a small, quirky apartment.  (If anyone from Danby is reading this, it would be really nice if one could buy an alternate, longer hose - maybe 8-10' - instead of the default hose to help fit this thing in a weird space.)
2.  You can't tell what part of the cycle the dishwasher is in.  This means you have no clue how much longer it has to go or if it is in a part of the cycle that can be skipped.  It seems to take a long time and if there's a drying cycle I'd like to turn it off sooner.
3.  The on switch and the delay switch are not easily distinguishable and don't follow any conventions for what these switches should look like.  The on switch does not look like an on switch, so I often confuse them.
4.  The name of the cycles on the display doesn't make any logical sense.  They are named P1, P2, P3, and P4.  The only way to tell whether you're on the short cycle or the long cycle or the energy saving cycle is to read the manual to figure out what on Earth P1, P2, P3, and P4 mean.
5.  The water does not drain out of the bottom of the dishwasher very well at the end of the cycle.
6.  At the end of the cycle when the water drains, it is very loud.  I live in a small one bedroom apartment and if I turn it on before bed it wakes me up when it is done, even though I have been known to sleep through smoke detectors and freight trains passing nearby.  It's no problem when I'm awake and it's not loud enough to bother the neighbors since it's not a noise that carries and the noisy part is very short, but it's loud if you're within 40 feet.  (A detachable hose on the bottom of water outlet would help dampen the noise.)

So I would get this dishwasher again and I love it, but I think the engineers have some work to do.  If you're going to get this, you should get out a measuring tape and make sure it fits where you want it and really plan how it fits.