looking to buy a new sleeping bag for a trip to the alps next next year for some multi-day climbs. done lots of multi-pitch climbing and lots of Scottish winter climbing but never combined the two. I know ill be needing a comfort rating of about -15/-20 degree.
needs to be water resistant( so use a bivy bag, or should i get a sleeping bag all ready water resistant?)
down vs synthetic?
cost? (looking for something under £500)
Is there any that you would recommend from experience of mutli-day alpine??