This Casio IS more intuitive than at TI.

Having used both the TI-84 Plus and this, the Casio is so much easier to use, once you understand how to use it

After the steep learning curve, he now loves the Casio and strongly prefers it to the TI.Why does he

For college level math courses you won't even be allowed a graphing calculator... and this is where most Casio's excel.

I have always used Casio for my school and my university; when my old calculator damaged (water was dropped on to it), I didn't hesitate about purchasing another Casio; and I do not regret that decision

The only small disadvantage is that connecting it to the internet isn't as easy as with TIs, and there appear to be fewer programmes available for the Casio

But if you go on to study circuits and upper level engineering topics, then this Casio 9860gii sits in a sort of "nowhere-land" -- It isn't as powerful or usable as you'd like, but also not as simple or cheap as some of Casio's great scientific calculators.