i rocked the holden laurent jacket last year, that has a slim fit and sort of quilted rather than puffy. It's what i decided on when looking for the same sort of thing. I think my new one is called the Sitka, which is very similar. They also do some fairly slim fit down jackets called the Cumulus I think.
there's a certain point where it neither looks good nor functions properly...that's when you know you look steezy - no_steeze