As Texhunter suggested, go to www.campmor.com , and check out their bags. I own a "Slumberjack Kodiak" which is 7 Bags in one it ran me $300.00. The "Kodiak" has a -40 degree rating, and I have never been cold in it (I purchased the Kodiak from "Cabelas"). In my Fall 2004 "Campmor" cataloge they have three "Slumberjack Bags" that are rated at -20 degrees for under $150.00. I owned a "Slumberjack Quallofil" bag rated at -30 degrees, and it was a excellent bag I purchased from "Campmor" (I never was cold in that bag either). Good luck.