The top recommendation for budget-conscious campers in r/CampingGear. A 20°F rating covers most three-season trips, and REI's quality control and return policy make it a low-risk first serious sleeping bag.
Not everyone needs a $500 Western Mountaineering bag. The REI Lumen 20 is the smart buy for casual backpackers — solid warmth, reasonable weight, and REI's legendary return policy as a safety net.
“The best option seems to me to be the REI Co-Op Lumen 20.”