Which has the highest rating? Which is the warmest? Which was the lightest? Which was the least expensive? Which is the most expensive? was the warmest, but it was also The Mex-Comfort was more expensive than the Northern Region. Finally, the Mex-Comfort was lighter than the other sleeping bags, so it was easier to carry. I decided not to get the Northern Region for camping outside. But, I preferred the lightest sleeping bag, the Mex-Comfort. That's the one I chose! Mex-Comfort Wintery Warm Northern Region​