Also looking to hear others' suggestions on a similar application. My Marmot Trestles 15 has always been junk and I think I'd like to go to down.
This bag seems to have a lot of buzz around it since it came out. If I don't buy something else before fall, I'll probably just go buy this one before my hunt in October. Western Mountaineering at full price is just too far out of my price range, and I hear mixed things with Montbell. At least REI has a good return policy and is local to me if I decide I hate it after my hunt. REI Magma 10
At roughly 2.5 pounds I really like my Nemo Nocturne 15 degree bag. Comfortable and proven performance. Its my " go to" Spring Summer and Fall high country bag.