I am contemplating upgrading my bag this year. In the spring camping I have done so far I have not needed a bag that was water proof but was wondering if it was must have for spring conditions/camping on snow.
i have a marmot 5 degree, not sure of the model but its down and two shades of orange. its my first winter bag but ive used it a few times down to 10f or maybe a bit lower and ive been sweating every time. i do sleep hot though. it packs as small as id expect and doesnt seem that heavy but i dont count weight. im 6'2 and got the long to have room to stuff cameras, water bottles etc in the bottom and i still have plenty of room. oh and loft seems great but i dont have much besides 30degree synthetics to compare to.
I have a Golite sleeping quilt. The quilts are awesome because when you smash the bottom layer of your sleeping bag, the insulation is compromised and lots of heat is lost so why carry the bulk and the weight. As long as you have a good pad which you generally need in snow anyways, you're good. My bag is 20 degree rated and used in colder temps and I have never needed more. Want some extra warmth wear your puffy. Add more warmth and use in combination with a bivy sack. I love layering techniques. It doesn't just work with clothing. You would be surprised how well it works with gear too. Compressability on the quilts are amazing. It packs up smaller than my puffy does!!!