toured there in 95-96 for 9month, revisited last year Nov-dec and ots not changed that much. Aboslutely a must for bike touring with lots of mtb opportunities and light excursions to be had. Main touring highlights were North Island:- East Cape, Bay of Islands, Bay of Plenty, North Cape, Tangariro. South Island:- Mount Cook, Lindis Pass, Haast Pass, West Caost, Arthurs Pass. Main light excursions (leaving most luggage at a base)were all in South Island:- Marlbrough Sounds/Queen Chartlotte Way- 4 days,Glenorchy to Paradise 1 night and Wanaka to Mt Aspiring Hut – 4 days. MTBing (removing all gear etc)was good on Banks Paninsula, Wanaka and at Mount Cook, though walking there last year lots of tracks have been eashed away mainly upto Ball Hut by Tazi Glasiier.
Weather was superb for both visits during thier summer, touring great especially in wilder places especially around the East Cape though many white/kiwi will try to discurrage you with stories of rape and pillage by dodgey maori. My time on E/Cape with the Maori was one of the most hospitable!!!
Go and enjoy!