I'm not sure why the other reviewer says he has a hard time finding good japanese food in Houston, some of the really great Japanese restaurants in Houston are in the Westchase and Memorial areas (freshest sushi in town is just one block west of JW) - I work for a Japanese company and spent 13 weeks over the last 14 months in Chiba, Japan, so I know authentic Japanese food, and Houston is blessed with authentic, good Japanese places. \r
J.W. Sushi is a great little place to stop in and get sushi to go. Not much of a dining area to speak of, and zero ambiance, but the people who run the place are friendly and the sushi s pretty good for the low price. Is there better sushi in Houston? Tons. Is there cheaper sushi? Besides grocery stores, probably not. Most other places that have sushi at JW's prices aren't quite up to snuff on quality. JW definitely caters to American tastes more than the most authentic places, but JW strikes an excellent balance of budget sushi, and express sushi, that is decent quality.
Pros: Decent quality for budget sushi, fast service, to go available
Cons: Zero ambiance, small seating - best to get sushi to go