While the key feel on the TI-Nspire isn’t good, the rest of it is quite easy to use without having to resort to the user manual for the more advanced functions. The UI makes difficult things manageable. I’m a fan.

Let's void some warranties
While the key feel on the TI-Nspire isn’t good, the rest of it is quite easy to use without having to resort to the user manual for the more advanced functions. The UI makes difficult things manageable. I’m a fan.