Hey Sabu,
Something to think about.... down is a very poor insulator if it gets wet. Not sure what the Vango or Blackwolf contain. So if your looking at using it in NZ, there is the potential for it to get wet in a bivvy etc. Learnt this the hard way and ended up having a pretty uncomfortable night. Maybe look at synthetic Snugpak. But having said that, down is awesome in cold, dry conditions.
EJ |