I prefer Rosematta Rice to Ponni Rice as the water from the cooked rosematta rice is higly nutritional and flavorful.
Rosematta Rice is the popular rice in Kerala, which is pinkish in color, it's available in some Indian stores. Ponni rice is available in almost all Indian stores.
Add enough water while cooking the rice, otherwise the cooked rice will absorb all the water.
You could also flavor your cooked rice water with Rasam or pickle for a spicy kick.