CASIO Graph 90+E

[severedgarden]

That's a good point, Tom L.
Thanks for the Nspire info.
My concern about that calculator is that it's a not too modern model, I like the Casio because I like the brand and it's a new product, so (maybe just in my head) it means modern components, longer life, optimized and improved performance.
So, as you have the Numworks and the Nspire, which model do you recommend?
Also, do you have the CG50? If you do, how does it feel? I have the new Casio Classwiz and the buttons feel a bit flimsy (it's normal as it is a £20 calculator!)

Too many questions, I know!
Thanks!