I use a NorthFace poly-fill jacket (for about $60 at an outlet). It's a bit warmer than a fleece, really durable (wore it nearly every day last winter), water repellent for a short period, zips into their shells. Cons: no hood, not water proof.

In comparison, it's warmer than my NF 300 fleece jacket (not the windbreaker fleece, and it's also about 6 yrs old), but not quite as warm as my NF down jacket. Packs to about a small/teen size football.

In fact, I just started wearing my NF fleece this week, to/from the gym, after essentially replacing it with this jacket. Tried to find a link, but got tired after looking through 9 pages.