Because in my case (living in Europe) I have two good options for miles-collection, I wondered which program is the best to join for getting awards between Europe-US and Europe-New Zealand.

For milescollection there is no big difference for me, both programs give me -in my situation- over 100.000 miles a year, but not enough EQM for getting status. In both scenarios miles won't expire for me (M&M: creditcard - AA:every month transactions)

Besides this I collect FB-miles, so combinations may be possible (flying from Europe to Singapore with Skyteam, and with another alliance from Singapore to NZ is a possibility).