I bought an 850 fill hooded puffy from REI that was extremely light weight and packed into its own pocket. I wore it all of last winter and it seems pretty legit. I'm pretty sure I got it for $270, so not super low cost, but half of what arc'teryx would be.
Yeah but it isn't down. In comparing the jacket I have to comparable arcteryx features, the arc one is generally several hundred more.Not entirely true, the Arcteryx ATOM AR that has been mentioned here is everywhere online from $225-$270.