MS Natural Keyboards have the opposite shape of natural in the Z-axis. Your pinky and index fingers have to travel _more_ because the curve is a mirror of the c

MS Natural Keyboards have the opposite shape of natural in the Z-axis. Your pinky and index fingers have to travel _more_ because the curve is a mirror of the curve of your hands. Kinesis Advantage2 are the negative shape of your hands and the split lines up with your shoulder width. Love my Kinesis Advantage2.