>>861626I've been thinking of getting one of their grey ones as a winter and a sea to summit ultralight as a summer. 5.7 and 0.7 r value, respectively.
The 5.7 is probably serious overkill, though. I wouldn't expect less than -1c in the middle of winter.
Then again I'd probably like to take my base layers off at night as well...
I guess the thing is to just make a decision and get some experience.