Originally Posted by BillyBob58
But when it comes to comparing to a Western Mountaineering bags loft AND temp rating, remember the dif in a bag and quilt. First of all, the hood. And I think the Jacks would be the first to say that if you are going to be really warm at 20-25*F in a 2.5" loft quilt, you probably will need a hood to go with it. Just like a sleeping bag. Although, if the quilt is long enough, for side sleeping I am able to produce a faux hood by pulling the quilt over my head and fashioning a small breathing hole.
The Jacks sell a down hood. You can also get a down balaclava from the Down Works; they make very good ones for around seventy bucks. I use a beanie hat and add a fleece balaclava if extreme cold is suspected/expected.
I migrated to quilts from mummy bags because I developed a rather intense dislike for the hoods, so possibly blocked that out as being a factor.
I much prefer being able to move my head independently of the body insulation. I would use a hat instead of a hood even if someone forced me into a mummy bag for that reason.