99% of the Japanese must use rice cooker at home for cooking rice. At home it is almost impossible to cook rice for sushi without rice cooker. Nowadays many Japanese families have an electronic rice cooker. An advantage of the electronic rice cooker is to be able to keep rice for hours or days very fresh as if the rice was cooked right now. Electronic rice cooker is very much more expensive than simple electric rice cooker. Electric rice cooker which you can buy between 50 € and 100 € must be sufficient for your occasional Japanese cuisine.