REI sleeping bags, I bought one last year, probably a dozen nights now. I'm not going to knock it but I have been unhappy with the zipper several times. Same with a new half dome tent I just got. My (25 years) old REI pack has bombproof zippers. The new stuff seem to me to be pretty finicky. I really need that zipper to work for me the first time at 3AM.

Good luck.