I'm looking for first hand recommendations for a quality down bag for summertime conditions in the mid-AT states. I've been using an ancient Slumberjack down bag that has served me well. It weighs 32 oz. It lost some of its fill early in life (in a washing machine incident) and has lost some of its loft over the years. It will have a shortie Thermarest (Prolite 3) underneath.
Frankly, the only reason for replacing it would be to reduce weight.
I figured a 45 degree rating would be sufficient. But I slept last night in a brand-new Mountain Hardwear Phantom 45, in my basement, where the temperature was exactly 60 degrees -- and I was a bit disappointed. I haven't given up on it yet, but I'd love to hear what others are using and recommending for this very specific set of conditions.