Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best Keyboard On The Market !

I have been using the Microsoft Natural Keyboard Elite V2.0 for over six months now, and it is by far, the best keyboard made. If you do a lot of typing, there is simply no substitute.After going through roughly 5 different keyboards, the MS Natural Keyboard has won me over. Keystrokes flow smoothly, and my wrists never hurt, even after hours of non-stop typing.I can't think of any cons with this keyboard. Just wish I had one at the office as well.