Down feathers may be the animal kingdom's best insulator, but those feathers need to come from somewhere. There is the Responsible Down Standard, which many big brands like The North Face, Marmot, and Mountain Hardware adhere to, and it states that feathers should not be plucked from live animals, but it would be great to have an alternative that didn't leave any room for ambiguity.
If you just can't take the bulk of a down jacket, the Orion parka could be for you. It's heavy and a little expensive, but it's also highly water resistant and nicely made.
We won't be able to fully test the Orion until the temperature dips below freezing, but something like Oros' Atmos zip-up hoodie would be more ideal for fall weather. Until then, stay warm out there.