From now until March/April Air NZ has some good fares on Premium Economy. These seats aren't like Premium Economy I've seen on other airlines and they actually look more like business class seats compared to some of the business class I've had with airlines such as Iberia. Its not going to be as good as paying full price for Etihad or perhaps Qatar business class but Air NZ has a good ratings and these are direct too with business class food and extra luggage.
I'd look at the video in the first link to see the seats as I was quite surprised at how much better they looked than other premium economy airlines.
Some reviews on TripAdvisor https://www.tripadvisor.co.uk/ShowTopic-g1-i10702-k6670779-Air_NZ_PE_Space_Seat-Air_Travel.htmlhttp://imgbox.com/UI7xTkLh