Regarding the ratings,
I think sooner or later, one will end up with at least three bags. 1. Summer, very light 30-20 degrees. 2. Shoulder seasons, 10-15 degrees. 3. Winter bag -5 to -20, sleep anywhere bag. Some people might add something to go high in winter (above 6,000 meters) -40 bag. One bag will not do it all. If you are new to this activity, buy something that fits most of your trips today, later you will buy bags for specific situations.
Last edited by asmrz
on Thu Feb 28, 2013 5:03 pm, edited 1 time in total.