I went camping this past weekend. It was a Boy Scout OA event. Friday night reached 22 degrees F. I missed seeing what Sat. night's low was. Both night's I slept toasty. Sat. night I had to much on and had to come out of some clothes and my socks. Sure was a shocker when getting up to go from toasty to brrrrrr cold when I got up the next morning. I used my Underground UQ and my homemade TQ. I also had my silk sheet that draped over the inside ridgeline to trap moisture from my breathing. It was soaked the next morning.
New Underground quilt worked and kept me toasty and that's how I want to sleep. I don't want to just have enough insulation that I survive, I want to enjoy that night's sleep and wake up refreshed and ready to go.