Math geeks and engineers
 

So I'm in the market for a graphing calculator for calculus and beyond. I'm in the electrical engineering program at UMass.
The class' website still recommends the TI-86, despite the fact that it is out of production. I have never been a fan of TI, the inputs have always felt clunky and awkward. They try to simplify the inputs for students, but I think it really makes it more difficult and not user friendly.
I've been using a Casio and really like it. Inputs and usability are a lot better. Simple and straight forward.

Anyway, does anybody have recommendations on graphing calculators and why? What makes it better, even if it is a TI. Not looking for anything crazy to program games or anything like that, just for higher math functions.

Do you have an android phone? Lots of great calcs out there for it including the whole line of TI emulators.

Not allowed on exams.