I have owned a 470NE which was a great rifle for Elephant but I felt a 450/400 would be more versatile as I prefer to carry only one rifle to Africa.
With the .400s quick second shot, it makes for a better Ele Gun than a 404 imo (not as good as the 470).
Attach the QD scope and it can be used for those precise shots through the bush at a Buff or be it a bush buck.
At twilight with a scope it can be use for the Cats or Hyena and with the scope off it gives comfort on the approach to the downed animal or waiting vehicle.