"I wouldn’t worry too much about down shift. Stick to top brands like Enlightenment Equipment, Cumulus, UGQ, Warbonnet, Nunatek or Hammock Gear and you should be fine"
I have quilts from three of the makers you mentionand only the Diamondback does not have downshift problems. I believe its because I order wide quilts and somehow...no additional down is added to offset the increased volume. Whether 20, 40 or 50 degree rated I have shifty quilts and while a terrific advantage in warmer weather...in the cold in can ruin a trip IMHO. I am thinking of a 40 degree 950 fill Diamondback for 3 season trips but have yet to pull the trigger. It MUST be the bees knees as to small size and big performance.
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