Parker wrote a review of Sierra Designs Backcountry Bed 800 Sleeping Bag: 20 Degree Down on September 19, 2014
This is by far the best sleeping bag I have ever owned. I sleep on my stomach, so it seems like this was made just for me. I like being able to stick your feet out the bottom if you get to warm. Cools me off quick.
Be sure you have a pad because there is no insulation at the bottom of the sleeping bag for your back. They did this to save on weight. Not a good sleepng bag for a hammock. I used it on a chilly night, in my hammock, in the mountains and had to add layers. Everything was warm except for my back. Also, it might be harder for a larger person to move around in the sleeping bag. I'm 5'8" 170 lbs.
The weight is great and it packs down fairly small. I don't use a compression sack. I stuff my sleeping bag in my pack to take up the space between items. It helps keep things from moving around. This is a great sleeping bag and I would recommend it.