[DragonChi]

Synthetic Coreloft, is great for Vancouver wet cold.

Down, is great for for TO dry cold.

I have a Atom AR and use it all the time now that it's around 0. Atom LT and a hoody is good till around 7-10C. I use a polyester fleece vest as a mid layer for both. I was in Sudbury ON in late October and was wearing an Atom AR, hoody, and thermal baselayer pants. Pretty comfortable at 0C nights.

I used to have a North Face Nuptse, that would lose down too. I haven't come across a down garment that doesn't lose feathers. I have a Cerium LT Vest, and that loses a bit of down too. Only like 3 feathers over 6 months that I've had and used it. The Nuptse was good if it had a nice snug fit, used it in Vancouver winters with a hoody and was pretty warm. I had both the mediums and the large. The medium that had a better fit was way warmer. Been in Calgary with the Nuptse in -20C, with thermal pants, and a hoody. It was just enough to stay warm. In that weather, an insulated hoody would have been a godsend.