I can't say enough about this bag. I have about 8 different sleeping bags and for back packing this is the only bag I use. The spoon design is perfect for a wider person like myself.
I work out a lot and have a V taper which means in normal sleeping bags I feel crammed into the bag and it is uncomfortable making my night sleep horrible.
With my Nemo bag I can move around in the bag without it getting all bunched up. It is crazy warm and on good summer hike I just unzip it all the way and use it as a comforter.
It packs down super small and is very light weight.
I love this bag and don't need anything else.