I've taken to tossing and turning a lot, and side, rather than back, sleeping.
Just changed from bags to a quilt, and am very happy with it. I got a wide Katabatic Palisade whose attachment system eliminates drafts, and that has an overstuffed collar that cinches down around the neck. Maybe I've been instantly spoiled by Katabatic's features, but using it at low temps hasn't been an issue. First 3 nights were 20s, ~10F with layers, and ~0F with a down hoody.
No more twisting, burrowing, and breathing into the bag, plus so far I seem to stay on my pad better(presumably due to being clipped to it!).