These days I very rarely contribute to forums, but decided to add input to a previous thread, because of the new regulations, in regard to statistical tables, that will force students and teachers to consider calculators more powerful than the one that students typically use from Y7 until they leave school. I've now finished a very thorough investigation of the top end and bottom end of what 6th form students will need. And no, I'm not going to give a blow by blow account. You will just have to trust me. Though I doubt it, hopefully the back-biters will leave this thread alone, or give good rational reasons why they dislike my recommendations, or prefer another calculator. For non graphics calculators the Casio fx-991-EX Classwiz is the clear winner. I have looked at the TI30X Pro and it is not as good. For graphics calculators the Texas Instruments TI-Nspire CX stands head and shoulders above the rest. Once again, I have had a thorough look at Casio's latest fx-CG50 and was not very impressed: if it had been I'd have written a book for it. For the sake of your students don't even consider cheaper graphics calculators. They aren't nearly as powerful or user friendly, and most students won't make much use of them. So it's money wasted, rather than saved. I've taught students to use the TI-83/84 and the fx-9750G so I know them very well: they are nowhere near as good. If you don't believe me then do your own homework and have a careful read of each calculator's manual. And do notice, there's no brand loyalty here. Both Casio and TI are winners, but in different areas. These are both much more powerful than any Y7 student will need, but it makes sense for them to have one from the start so that when things really matter, they will (or should) know their calculators inside out.