I have had similar thoughts on the sack vs. blanket problem. I too have chosen the blanket. A blanket could also make a reflector for your campfire if tied between two trees (or whatever). You can also walk with a blanket wrapped around you.<br>I have used a space blanket only once. It was during that huge snowstorm that covered the eastern USA in 93. Those things will cook you alive. I found myself constantly letting cold air inside the blanket.<br>I do not forsee myself in the arctic circle or crashed on the side of a tall mountain so I will stick to the blanket.