TI83+ on sale
the ti 83+ is more than enough. I got mine at the same time you did, but laste year (beginning of grade 12) and I took algebra/geometry and calculus. It really helpes for calc and it heles with its fast solving for vector and plane problems in algebra. It will do fine, you dont need anything better, and +, most univesities dont let you use a calc for exams or tests.