The keys are smooth making each key stroke very easy.

The clear (C) key being near the 1 and 0 is also huge for ease of use

The soft keys are a plus for me.

The keys are surprisingly nice to the touch and very accurate.

I like that the case folds and protects the screen and keys

I seldom use the other bells and whistles, just the neg/pos key sometimes, and to me it's huge that the key for that is on the opposite side of the add & subtract keys