I’ve had the 49G, the 50G, and the Prime. I definitely enjoy the latter, though I don’t like it’s gimmicks (such as the touch screen) I do some solid work on it

I’ve had the 49G, the 50G, and the Prime. I definitely enjoy the latter, though I don’t like it’s gimmicks (such as the touch screen) I do some solid work on it. The CAS is quite serviceable for my level of algebraic manipulation, for anything it can’t handle I either use my brain or plod over to Mathematica (depending on mood, mostly).