Ditto,
Heavy, bulky, but warm and well made!
you can sleep out in it in light rain if you want to.
the other problem Iv'e heard from a few Buffalo users is the main zip fails I know of at least 3 cases (and myself). a much thickerzip would be better.
I have the inner and outer bag the inner on it's own can be a bit thin in spring autumn, and you don't want to haul 2 sleeping bags, there are a few versions knocking around mine has a "Gimp" style zipped up face presumably to scare people in the morning,
Globetrotter has a "Survival aids" version with a velcro'd face mask
1 of my bags has armholes the other doesn't (they are both named "Inner")
i recomend the "arm" version for hammock use!
you can buff up the pile-fibre easily with a stiff hairbrush.
My strong advice is "try" before you buy
the "Gimp" feature is quite clastrophobic!
(but warm)
(unless it's really cheap mine were army surplus £30 each)