I'm 5'11" and 190 and have the long version. I like to sleep a little more in the bag and it keeps me from compressing things from the inside.This was a couple weeks ago, just used the bag, nothing over me. In this case, the temps dropped down to about 15-19 degrees. You can see it frosted pretty good slept with jacket and hood. Last week, I was in a tent, with blanket over me when I froze.
Again, we know they are quality bags, but as mentioned, the bag is a 6-6" long, and the cut is very wide (nice for bigger guys) and may be the cause of being cold as there is alot of dead space not being used. Actually, I'm almost positive this is the case. Dead space = Cold air.
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