Hi Una! Congrats on the fun money! I come at these things from a different angle, so just some thoughts. I'm all about using $$$ to get exactly what you want. But from my point of view, the less $$$ you spend on any one item means more $$$ to spend on others - win/win as someone said
First, about the poly fill - i am certain you have technical equipment people up there with mad skillz, considering the resources we have here in the Bay Area. Ask around for a faboo one and get a quote on a knock off with down fill if you like. Plenty of amazing and technically outstanding zippers are for sale on the web for that matter, so you can add the perfect touch on the details. You can have perfect fit, secret pockets where you want em, etc.
And i'm not sure about the thinking here......was it i have $1K so what looks good for that price? Or did you nail down a true wardrobe hole/need/workhorse, define your criteria, and then go looking at all lprice ranges for the piece that fits your criteria perfectly? You do not HAVE to spend all you $$$. It's quite possible to find your dream item for much less (or a little less, or a lot more!).
This statement of yours gave me pause: "" At the same time, I could easily spend that amount on 20 mediocre items that end up getting purged down the road, KWIM? "" i don't know if this is something that you still end up doing regularly. But for myself i would not buy high end if i still was getting 'misses' a lot buying at lower price points. Just because it's $1k doesn't automatically make it perfect (please disregard this paragraph if it's not applicable
Lastly - if you have TAHT much $$$, why not book a bare bones cheepy weekend to SF or wherever and go shopping in person? If you want to hit SF and don't mind commuting on BART and sleeping on a couch, you're welcome to stay at my place. Once you add in all the shipping for trying on various pieces in your home, the humongously more large inventory you'd have access to in the flesh, and the mondo YLF meetup we'd have, it'd be a very wise investment.
Just some thoughts - Have Fun with this one! These type of experiences don't come along all that often, as we all know, so enjoy, lady! steph
p.s. fun blog post about riri zippers:
http://www.fashionismurder.com/tag/riri-zippers/