Hi Jamie,.......
Ian is old enough to remember the NAC purchase of the Boeings,....... and so am i.
I also have many books on the subject, and several videos.
You forgot to mention one other aircraft that NAC also looked at and flew,........ French too,.......... the Caravelle.
One of the most important factors of the Boeing decision, is that it all came down to which of them handled the Wellington Waterfront Circuit, in Welly's notorious winds and bad weather,............ Boeing won hands-down.........
It was described as the most ideal all round jet aircraft for New Zealands unique conditions after they took delivery of the first of them.. Extremely stable and flyable in the worst Welly could throw at it.
All this, based on testing around Welly in a B727 which used the same wing as the, yet unbuilt, B737. The BAC1-11 and the DC-9 were tested around Welly's circuit, and did about as well as the old Viscounts did,........ not terribly well at all.
So all in all, it was a pretty brave decision,......... going for an aircraft that was still on the drawing boards.......
The decision proved correct in every possible way,.......... as history proves..........
Lawrie.

Wow, really interesting story Lawrie.
I've also heard numerous comments that the 732 was, in many ways, the perfect machine to drop into Queenstown. I don't think NAC started out flying in there, though.
Now I'm intrigued about the handling of the 732 versus any other jet. Maybe the flight models I've flown haven't been too accurate, but any 732 I've flown has handled pretty much like any other jet - big, heavy, slow to turn, and way too powerful to ever do a circuit in fullstop. I've also read in many places that the 727 handled like an oversized fighter jet. Again, big, heavy, slow to turn and way too powerful to ever do a circuit in fullstop in my experience.