For comfort, quality, and a good overall sleep, check out the Marmot Plasma 15. This sleeping bag is packed with a generous 875+ fill Goose Down that will keep you warm during those colder nights but the lofty fill will also allow your body temperature to breathe on those warmer summer nights which will keep you comfortable all night. This back is super lightweight (a little under 2 lbs), and is a great all year around bag that will give you the features and functions that you come to expect out of a high end bag. Be sure to dive into the other features listed below.
Certified 875+ Fill Power Goose Down
Down Defender to Improve Water-Resistance in Wet Conditions
Insotect Flow™ Vertical Baffle System Reduces Weight and Transfers Heat from the Core of Your Body to Your Extremities
Designed to Increase Thermal Value Without Adding Weight