Casio FX-CG50 Color Graphing Calculator, Natural Textbook Display, Black - Walmart.com
Buy Casio FX-CG50 Graphic Calculator Black | Avansas®
Update: It really does go without saying, the FX-CG50 is a beast of a calculator. But my trusty FX-991EX is still good for a lot of things. They are both good calculators. :