I'm looking into a new lightweight sleeping bag, and I'm not really up to date on the market. I don't need a full on winter bag. Most of the nights will be camping at the base of some mountain, i.e. lofoten camping or similar. But there are some plans for longer and more remote mountains than that.
In particular the marmot helium, which comes with high marks from Jon Griffith..
http://www.alpineexposures.com/pages/marmot-helium-sleeping-bag-review
What other alternatives are out there?