I want to upgrade my older base camp bag and make it my last one. My backpacking stuff is fine. I need a super warm 4 season rectangular bag for wall tent use. I'd like to hear from others on what they have found that is rugged and works really well. I have a Bravo tent canvas bedroll cover to put it in. I have the biggest Cabela's cot and best pad. What I have been looking at is the Slumberjack -20 degree Squire, the Cabela's Alaskan -40 degree, and the Butler Bag system which I consider the best out of the bunch. However, the Butler is pushing $475, the Alaskan $430, and the Squire around $250. Seems pretty spendy. I like the idea of having a bag with canvas on the outside. Any ideas from the crowd that doesn't like worrying about keeping warm on fall/winter hunts? Appreciate it.