It really doesn't get any better than this. There are and so many fishing options opened up by paying that bit extra for a helicopter, the sky is the limit as to what sort of fishing and rivers you want to fish from amazing dry fly sight fishing to drifting a nymph for that trophy trout sitting down deep.
I would recommend doing an overnight heli fishing trip, sleeping in one of New Zealands back country huts right next to an outrageously amazing river and unbelievable scenery it will blow your mind.