I would also like to chime in here and say that the key size on the PA50 is larger then the PA60 and even longer than the PA80. Tracknet is confused about the key size. It was actually the PA60 which had the smallest keys and I was thrilled and even called Korg USA to thank them for making the key size longer on the PA50.
George Kaye
Kaye's Music Scene
Reseda, California