I went to New Zealand for 5 days. On a leisure trip jetlag isn't much of an issue as you can sleep whenever you want. Personally I much prefer the variety of language, culture, food, drink and landscape in Europe. It being on the doorstep rather than the other side of the world is a bonus. FWIW I flew out with a few hours in San Diego and took the BART metro downtown to see the steep streets and tramcars and came back on a "direct" flight with a couple of hours in LA in a middle seat in economy. It wasn't as bad as I thought it would be.
