When considering a graphing calculator, the Texas Instruments Nspire CX CAS is often regarded as a top choice, but opinions vary. The HP 50g is also mentioned as a viable option, especially for those who prefer Algebraic calculations over RPN. While older models like the TI-85 and TI-86 are favored for engineering and science, they are no longer in production and must be purchased used. There is a general preference for calculators that perform simple numerics quickly, with some users expressing skepticism about CAS models, suggesting that software like Mathematica can outperform them. For those interested in software alternatives, Mathematica for Students 8 is considered a powerful option, and inquiries about potential coupon codes for it are being made.
