The cold has been the biggest problem with the Hennessy. I have been cold on 50 degree nights. I have yet to see a solution to this that works. Sopace blankets and quilts have been some suggestions.
Sweat from the space blanket is a problem and If you have to start carrying quilts and space blankets then are you light??
There has been great discussion on this subject on backpacker.com
I am most happy with my Tarptent. Very light and quite roomy. sleeps three for just over 3 lbs.
