I went through both those classes last year with a TI - 82, but i would have liked a better one, so id recommend an 83 or 86. but if you think youre going to use the calculator through high school and college, and dont mind paying extra money and learning the instruction manual, go for the 89. * ** * Dave Browne **** Alpaca2500@aol.com * ** * "Cuidado Las Llamas" * **** * ** * *