Another vote for the WM Ultralight--mine is about ten years old and still in great shape. The FF equivalent Hummingbird is likewise excellent. Other high-end choices include the Valandre Mirage and Nunatak Alpinist. For maximum warmth for minimum bulk and weight, they can't be bettered unless you look at quilts and top bags.

IMHO competing bags are a step down from this category but there is no reason to avoid them. The Marmot Helium is a nice bag and can be found on sale by the persistent shopper--probably for under $300.

Happy shopping.

Originally Posted By AKLoganTX
For many years I have used my North Face cat's meow and it has served me well. But the time has come to find its replacement.
I remembered a friend of mine in college bought a REI sub Kilo which seemed like an excellent bag. (20 degrees, very light and packed down to the size of a large grapefruit)Unfortunately it appears that this bag has been discontinued.

So my question is what is the lightest 20 degree bag that you know of.

Thank you
_________________________
--Rick