I got a Lands End puffer on eBay for $15 or so last winter when I couldn't take the cold. I got the shoulders taken in by a tailor for a less boxy fit (about $60 more).
It is incredibly warm and I get a surprising number of compliments on it.
Lands End really isn't my usual style - slightly more urban hipster, I suppose, is the obnoxious way you'd describe my more usual style - so I guess I would say don't rule those coats out.
But you should also check out Soia and Kyo for more actually stylish coats that will be both work and weekend-appropriate.
http://shop.nordstrom.com/c/womens-coats/soia---kyo~5212