Right now I use a TI-84 plus for all my classes that need a calculator. The TI-BASIC language is a major plus, because I always make programs to solve formulas when I'm bored in school.
I used to have a TI-83 plus, but the processor died on me. During a test in May last year, I guess that it just decided that it had enough of the world. And it just quit, erased everything, and then decided to never work again. Poor calculator...
