What's the best graphing calculator money can buy? Suppose I want all capabilities for all subjects--algebra, statistics, calculas, and so on. I'm looking at HP's top model, the 50g, and I'm trying to compare to the TI-89 Titanium. Any suggestions? By the way, I'm not a college student; I am a math tutor. But I love math and I never had a graphing calculator in all my years of schooling.