Quinzhees warmer than igloos? I've slept in both and quicky snow shelters and my thermometer read a few degrees below zero in all. This was in Arctic survival school and later for fun during Arctic and Antarctic patrols. Quinzhees are less sophisticated and easier to build. The disadvantage is waiting two hours for the snow to firm up. The Igloo can be built with skill in less than half an hour. The additional advantage is having built a few levels you are in a windbreak and removing materials from inside. When in doubt do as the natives do. Inuit use igloos.