I selected "no preference", but that last option does deserve comment.
Having been a university math professor for a time, I tried to learn every graphing calculator available. Most use some BASIC-like language, the exceptions I'm aware of being the more powerful calculators. The HP-48 used some language based on RPN, the HP-38 (not using RPN itself) had a completely different language, and of course the TI 89 (being more of a symbolic math package stuffed inside a calculator) was nothing like the other TI calculators, So even "what did my old graphing calculator use?" is not a trivial response ...