Ok, I've been looking at different bags both synthetic and down. My local Dick's sporting goods store has Mountain Hardwear and North Face bags that I like. Mountain Hardwear has a synthetic bag the Ultralamina 32 that packs pretty small and is fairly light. Then I looked at their Phantom 32 in 800 fill down and it packs down even smaller and is lighter and the comfort rating is lower on the down bag even though they are both 32's. I have another question The Mountain Hardwear bag has 800 fill down and a North Face bag I was looking at has 650 fill down, is the higher down number better or does this mean something else?