[OSL | CCIE_Voice] NM-CUE verses NME-CUE

[CCIE OSL]

I am trying to find a comparison document between NM0CUE and NME-CUE.

I been looking cisco site without any luck.

I see that the new V3.0 now have NME_CUE.
I need to figure out if I need to purchse NME-CUE or stay with NM-CUE.
This is for the CCIE voice lab. Not for a production.

Can someone tell is if this is absolute required purchurse item that I 
must have and there are much more functionality or testable items on 
NME-CUE that NM-CUE?

Thanks....