I was going to steer you to Nunatak, but looks like Jan is getting out of Apex filled garments and strictly doing down now- he had options where you could fully customize your vest (or jacket) with what weight insulation, inner and out fabrics, length of garment, etc
Enlightened Equipment makes an Apex vest (with or without hood)
I'm also intrigued by Sitka's Active Hoody- not a jacket, not a vest- right in between
