I buy Calrose rice by the 20 lb bag. It usually lasts the 2 of us about a month. Needless to say, we eat a lot of rice. I either buy Shirakiku, Nishiki or Botan as they are a reasonable quality and relatively cheap (about $1.25-$1.50/lb). The 5 lb bag will cost us about $1.75-$2/lb around here. I can't stand poor quality rice.
We use it for a variety of dishes such as: red beans and rice, gumbo, jambalaya, curry rice, shrimp creole, crawfish etoufee, crawfish bisque, sushi, donburi (like unagidon, oyakodon and ikuradon), Spanish rice, stir fry, side dishes with gravy, peas, etc. or sometimes just a plain bowl of steamed rice with furikake, soy sauce and Japanese pickles. We use a Panasonic computerized fuzzy logic rice cooker for perfect rice every time - well worth the extra cost, but you do need AC power.
Chip