The Aprilia Dorsoduro 750 linked above would be a good bike. Mine has been reliable, but others have needed minor warranty work. It is necessary to have a dealer within a few hours drive. There are about 6 of them in NZ, right?
It is an animal on rough, tight paved roads, quite it its element. It does OK off road, with the option of switching the throttle map to "rain" mode to control the 92 hp. There are a couple of issues that might concern you. The fuel tank range is only 100 to 130 mile, and the Givi Easylock Saddlebags are as lose to hard bags as are made for the bike. Top boxes and tank luggage is also available.