Which calculator would you reccomend?

[lemontea]

Oh, forgot to add, XCAS is also the SAME underlying CAS software that is used on the Prime. So you can actually type the same commands in XCAS, GeoGebra, PocketCAS, and Prime. (I think maybe the TI-NSPIRE also uses it but who cares about that one!)

So this way you don't need to re-learn everything.

ALSO by the way, the super powerful Mathematica program is FREE (usually hundreds of dollars+++) if you get a $30 Raspberry Pi and install the NOOBS software (free).

Like I said, for powerful stuff, we can use CAS nowadays. So, don't need to get a super powerful super fast calculator.