So I am picking up where I left off in my hike at the Shenandoahs in early June. I have a Jacksrbetter quilt rated to 20, but I would like something a bit lighter for when I go back out. I am not sure of whether to get a 40 or 50 degree bag for the temps I'll be experiencing, I'll be hiking north to Katahdin. I have been back and forth between enlightened equipment and hammock gear, and both look like great options-any thoughts on this?