So I'm on the market for a new sleeping bag. My current bag is around 38 oz I believe, synthetic, and rated at 25deg. The biggest problem I have with it is its large stuff size. I'm looking for a new bag rated around the same temp (+- 10deg), and the same weight or lighter. It doesn't matter too much to me if its down or synthetic, but I want it to be able to last. The biggest thing I'm looking for is something that is lightweight and compacts well (I'm trying to get into ultralight hiking). Any ideas?