Originally Posted by
DTW_AKL
... I plan to pay for travel using an Airline/Travel Credit Card and then as miles accrue use the miles for the occasional upgrade.
...
USA<>AKL is a difficult route for non-status upgraders. For UA, you may want to look at
PremPlus seating, it has the look and feel of domestic first class. Ditto for NZ's premium economy.
NZ flights have a upgrade bid program, UA flight may offer a discount upgrade option