Product review (5 stars): Convient and small. Does a good job.
This is the second one I bought. The first one died after a year, but it's so convenient and cheap that I bought it again.

 NOTE: let the water get hot before attaching the connector to the faucet, because it uses so little water that otherwise it will fill up before the hot water gets to the faucet.

 ALSO: check that the rotor rotates and there's no silverware or anything sticking down to block it. Because if there is, you won't know it and your dishes will still be dirty.