I love my TI-89, which I got ~7 years ago for college physics/astro classes, and still use fairly often when the need arises, typically once or twice a month. I find the interface of a physical calculator to be far superior to a more general purpose machine when facing the tasks its built for.
However, I also think they're way overpriced for what they are. I think a lot of the price is just 'because we can'.
However, I also think they're way overpriced for what they are. I think a lot of the price is just 'because we can'.