Most of the well know brands make a solid bag. It helps if you understand the fabrics and fill types. Some bags have a much better DWR and not all down works as well in damp. How much this is going to matter to you will depend on what conditions you camp in. I have found that for extended camping in the cold where tents often get covered in frozen condensation it gets harder to keep bags dry, they soak up moisture from the tent and absorb it from the sleeper. A 0F bag won't be a 0F bag on day 10. If your sleeping in a heated tent it won't matter near as much. As folks have said the pad under you is important. Lastly look at the sizing/Girth of the bags. Its easy to get drawn to a bag that is warm, but light to find out that the bag is cut quite narrow. For me I would want a bag that is large enough to be comfortable even when wearing all my layers.


Some manufacturers like Western Mountaineering make bags in a variety of widths. If WM is in your budget they make a great bag.

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