I used one of these for a week on a static camp in November, kept me warm and dry and quite comfortable. Absolutely bombproof construction,
real quality, but you wouldn't want to be over 5'10" to use it, and they weigh close to 2 Kilos, so you wouldn't really want to carry it on a regular basis.
I'm not a hanger, can't get away from the curved back thing, but I was comfortable in this and didn't want to give it back to it's owner!