Best Calculator for A level Maths

Hi, I currently own the Casio fx-50FH. But I heard that the Casio FX-991 ESPLUS is really good for you in A level. Is this worth the upgrade or is my fx-50FH enough. I want to know the additional features as well for the 991 that I can't perform on my 50FH. Thanks in advance!

I'm not familiar with the Casio fx-50FH. The key advantages of the fx-991 ES are that it does numeric integration and differentiation and can also do calculations with vectors and matrices. If your calculator can't do this then I definitely would recommend getting the fx-991 ES because it isn't particularly expensive and can be extremely helpful in an exam.

wow, being able to do integrations is already a HUGE plus for me...thanks for the help, will go buy one soon!

It can only do numeric integration and differentiation (i.e. you can ask it to integrate $\int_0^\pi \sin^2{2x}\ dx$ but you can't ask for indefinite integrals) but yes, it's still very useful.