That's what I use. I like them for a couple of reasons. First, can't roll off the pad. Second, I like the extra room most of them provide. I am usually a hot sleeper, but I went one step cooler in the rating after getting cold in a 15 degree Encampment in about 20 degree weather. And I was inside a tent with an insulated air pad. I was able to trade the bag for a 0 degree farwell. (Great service all the way around. BA would have traded through the mail, but REI did it over the counter.)
I am not out nearly as much as others on this forum but a big thumbs up from me on BA sleep systems.
