which university?
mustang recently moved down to otago and is finding it amazing:
FR: dunedin = potential!!!111!!!!11!!!!!! (from AucklandLair.com)
though everywhere that is big enough for a university is going to be great to study (I'd personally recommend University of Auckland. And no, of course I'm not biased because I used to work and study there! lol).
Check out
The Auckland Lair, not too surprisingly the place is stuffed full with NZ PUAs.

I'm sure people there will have more detailed responses than I'd give, and their own spin on it.
Regarding moving here from Europe, if you should or not depends a lot upon your reasons for moving (and where you are coming from in Europe). If you are just talking about moving here to study, then for sure go for it! But if you want to move here to make more money... well, perhaps not such a smart idea. If you want to move here for the great outdoor living, or the laid back attitude, then bingo! You have picked the right place to come to. Yeah, depends a lot on your reasons as to if it would be a good idea or not. Like everything in life. Explain a bit more about yourself if you like.