M-Audio Code 61 vs M-Audio Oxygen Pro 61

Hi,

I'm currently using an M-Audio Code 61 midi controller keyboard for recording vst instruments and it has been really great for many years. However, now that NI has announced NKS support for the M-Audio Oxygen Pro 61 I'm interested to know how these models compare?

How does the Oxygen Pro 61 compare regarding the keybed/action to the Code 61? Also, how do the other functions/features of the Oxygen Pro 61 compare to the Code 61?