JD, I just bought a Stealthtex Insulated Parka in Predator Fall Grey. (my favorite camo). It isn' t an artic style coat, but i like layering better than one big garmet. It has a wind stopper lining, 200 grams of thinsulate and it very quiet. I bought it for that reason alone. I have been wearing it while out yote hunting and shed hunting this winter and with normal layering it has been excellent. If interested take a look at the predator website
www.predatorcamo.com. I know Sherwood Park Archery Lanes, sell a lot of predator-FYI.
Again I am into layering for warmth, so this may not be what your looking for, it wouldn' t be a single garment for extreme cold.