[pdpita]

CPMP-VPG-U-NG and CPMP-HVPG-U-NG doesn't exist anymore.

Actually, for unlimited users, you can choose between UTM and Power versions (there is also an UTM Power version).
UTM is the same as the former Express CI version, without the limitations of it; you can have unlimited users for gateways and unlimited sites for SmartCenter.
Power is the former VPN-1 Pro version plus SecureXL in the same license.
UTM Power has the sum of the features of both versions.

UTM:
CPUTM-VUG-U
CPUTM-VUG-HA-U

Power:
CPPWR-VUG-U
CPPWR-VUG-HA-U

UTM Power:
CPUTM-VUP-U
CPUTM-VUP-HA-U