Product review (5 stars): Great for the single bachelor!
I purchased this unit to save time from hand washing dishes, and it saved a ton!  Every day for a year I used it without a problem.  Used the short wash cycle and it did the job just fine.  The dishwasher cleaned better than any built-in unit I've ever used.

I don't recommend using jet-dry in the unit, it seemed to overcoat my glasses.  If you get the dishwasher, once it's done washing, open it to let everything air dry.

Some plates blocked the sprayer, but rearranging them solved the problem.

Any disadvantage could not possibly outweigh the time savings and convenience of this dishwasher.  Well worth the money and used very little energy and water.

Except, I don't recommend for two people who use a lot of glassware in a day, because you'll probably have to run twice in a day (for a descent larger portable dishwasher, check out the GE line, one model number is GSC3500NWW).