I'm going to go against the flow here and say my heavy stainless 2 quart saucepan. Throw in your rice, water, salt (butter if you like) and bring to a boil, turn down to low and simmer 15 minutes. Turn off and let sit another 10 to 15 minutes and its done! I cook rice about 3-4 times a week. Note the above recipe is for white rice only, directions for brown rice differ totally.
My mom has a rice cooker because we all used to tease her about never being able to leave the lid down (rice wouldn't cook). She has since retired it and gone back to the stove method.
"You know I was talking to my friend Desdemona the other day she
runs this space station and bake shop down near Boomtown. She told
me that human beings are flawed individuals. The cosmic bakers
took us out of the oven a little too early. And that's the
reason we're as crazy as we are and I believe it." Jimmy Buffet, Fruitcakes, 1994