Be advised, the TI-89 is on the "No" list for several standardized tests.
Also be advised that you'll need to know what you're doing without the calculator in college--many profs like to disallow calculator use on tests, especially of calculators that integrate. (I had to revert to my H.S. choice, a Casio scientific calculator, for a college class's tests last year--graphing calculators weren't allowed either.)
Not having used either calculator (I use a TI 84+ Silver), I really couldn't say which one is better.
[offtopic] Comp science? Just program your computer to do the calculator stuff for you!


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Past teams:
2003-2007: FRC0330 BeachBots
2008: FRC1135 Shmoebotics
2012: FRC4046 Schroedinger's Dragons
"Rockets are tricky..."--Elon Musk
