So, I just moved to Minneapolis and it's starting to get chilly here. I think it's time to invest in a more substantial winter jacket and I'm looking for advice. My primary goal is function, i.e. I'd like to stay warm when it gets down to I don't know -20. I'm thinking I'd like to keep it <$500 unless that's totally unreasonable. Stylistically I'm lost as hell. I feel like down jackets are probably the warmest (I might be guessing here). I'm completely lost brand wise, but have scanned everything from LL Bean to Canada Goose. In general I tend to wear mostly Patrik Ervell, APC, Our Legacy, etc. Any thoughts, suggestions would be really appreciated.