Hardcore
calculator users include acolytes of the
Hewlett Packard (e.g.
HP48) school and of the
Texas Instruments (e.g.
TI-92) school.
These sides perenially engage in
flamewars.
As a generalization, the cheaper TI calculators are commonly required in high school, whereas the more expensive HP calculators are more common in university.
There is no middle ground in this debate; only ceaseless flames directed from one camp to the other. The crux of the debate centers around whether or not
RPN is a blessing or a curse.
For reference, the
one true faith is hp48 and RPN. Other interpretations are
heresy.