Hmmm. Down is fine, but synthetic is good too.
A good down bag used to cost FAR more than a good synthetic. Today its not so bad, but still they are more expensive, what you get is lighter weight and packability.
I feel the packability is a non-issue as i cannot carry my backpack if i fill it completely.. Weight however,
-will you walk or camp?
-what night temperatures do you expect?
Ive spent 100s (sometimes 100 a year) nights in sleeping bags. Mostly in synthetic, and mostly between -10 and 10 deg C.
- Sleeping bags are NEVER as warm as the producer claims.
- freezing at night sucks, big time
- Sometimes they DO get wet
- Down really shines when DAMN cold, as in the arctic
- too warm a bag is bad too, but not as bad as too cold
- do not dress up inside, wool underwear is fine if cold, not more
- a silk liner (that you can wash after every trip) will make the bag last
- be sure it has a hood
- if cold sleep with a wool cap on your head
- a thick closed cell mat under, always, branches and stuff under that will help
- you will not regret carrying a tent, bigger is better, unless very cold, and , will you walk or camp?
http://www.helsport.no/helsport/producthandler.aspx?t=ringstind&containerid=23041&parentid=23032&entrypage=true&guid=1&lnodeid=5&pageid=5004 Ive had several Ajungilak sleeping bags and swear by them, but there are many good brands. The Swiss brands are usually good for such equipment too. I dont know US brands (but the US stuff sold in Europe is often crap. sorry )
http://www.nanok.no/Engelsk/index.html http://www.mammut.ch/en/products_sleepingsystems.html?cid=292177 In Europe there is a test standard for bags, some US bags may be marked by that.
http://en.wikipedia.org/wiki/EN_13537 Even in our mild UK climate i've seen fit and healthy men
UK may be mild but it is f.. wet and damp, i much prefer cold weather to wet weather.
K