TI-Nspire calcs are top notch. My GF has the newest one....she won it at a math competition....and it is basically a huge phone.....she can make word documents, export graphs, use the built in trac pad.....soooooo coool.
@billion57(View Post) Are those your only options? I use a CASIO classpad 330. It is a graphics calculator (as are your choices) with a 4.1 inch touch screen (plus a number pad, of course). It is not light on the functions... It is quite packed with functions and abilities. But if those are your only options, I would go with the one that looks coolest :P.
Casio scientific calculator is all you need. (The people I know who are state mathematics champions use their heads to win, not fancy algorithm charting programs. They help, I'm not saying they are not, but that's a bit ridiculous to put money into a calculator for crying out loud.)