Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fits better in hand the predecessor.

Personally, I really like the way the buttons have been rearranged to fit the hand. However, since there are fewer buttons, you need to use the "shift" key to get to important functions. I'm doing fine with it, but my husband is having troubles! The problem is you often have to do two functions in a row--one with shift and the other without. It gets a little confusing.