The best portable dishwashers are the Danby DDW1899WP and the Maytag JetClean Plus MDC4809PAW, according to reviews on Consumer Search, and both models are available from Amazon.com, as of February 2015. These choices are based on consumer reviews of both brands.
The Danby DDW1899WP is an affordable option for those looking for a dishwasher that works just as well as a high-quality brand but at a price for most budgets. This dishwasher is easy to clean, easy to use, and it fits in small, compact spaces. It is also reasonably quiet when compared to other dishwashers on the market. However, some users report leaking from this dishwasher and claim it does not completely dry dishes.
The Maytag JetClean Plus MDC4809PAW also has high reviews, but it comes with a higher price tag than the Danby. Users consistently rate this portable dishwasher with four out of five stars. One reason this dishwasher is rated so highly is that it is quiet and cleans thoroughly. It is easy to move and set up as well as very efficient. This dishwasher also rates highly because its wooden top can serve as additional counter space. The reviews are mostly positive for this Maytag, but some report inconsistent cleaning and drying as well as no indicator to show what part of the cycle the machine is on.