Since Mountainsmith no longer makes down sleeping bags, I am curious as to who makes the best 0 degree down sleeper? Based on the following criteria 1: weight 2: durability 3: pack-ability (compactness when packed) 4: cost and finally 5: customer satisfaction.
I prefer 0 degrees, but I'm sure there are great 15 degree sleepers too. I'd like to hear about them also.