The best Casio keys in my opinion were the hard plastic ones of the 80s. The newer models always seem to have a couple of design flaws that affect usability.
I have a few late 1970s and early 1980s Casios with the same buttons and their resistive membrane becomes very brittle and breaks, turning the calculator into a brick. I personally don't see many being sold in the used market anymore when compared to TIs and HPs, perhaps suggesting these models didn't age well.
TI-85 eats Casio toys for lunch
Horrid screen. Fixed in TI-86
Cough, Ti-89/92, cough.
Casio FX-991EX ClassWiz is a Scientific Calculator not a graphing calculator.
Like multimeters and oscilloscopes, both measure voltage, but you wouldn't mixed em up, right?
And also Casio is 20 USD. Best price performance there is.
You bet your ass Porsche is nicer than Clio Sport. But in reality they are equally fast point A to point B. Road conditions, traffic and average persons driving skills will take care of that.
At this level of scientific calculator, I find them all pretty much the same, both in display and in tactile fell - the HP35S, which I find well above average in terms of keypress feel and quality, is my daily driver. However I don't use it for scientific but base conversion instead
I disliked the low contrast display of my former TI89 Platinum, even when compared to the graphical HP48SX/GX. The Casios and HPs are much better.