The issue with down jackets is they wet out and lose their warming properties unless you pair it with a waterproof shell. I would aim for synthetic insulation like Primaloft or Coreloft to combat this issue and choose a jacket with good water repelling face fabrics. If you want waterproof and warm from Arcteryx, check out the Fission SV jacket.
Personally, I'm eyeing the Arcteryx
Hoody right now since I already have a Beta AR jacket. It provides the same warmth like the Fission jacket but isn't waterproof.
You can also check out jackets from other brands like Patagonia, MontBell, and Mountain Hardware.