I've been to Echo Park and I know it can get pretty chilly. I live near Ontario and use under armor and a windbreaker that I had, to commute, but the windbreaker traps in a lot of heat and doesn't let the under armor do its job. I would not recommend this its just that what I'm doing is a really cheap alternative.

The Broadmoor-It looks warm but I don't know how well it will do against other weather conditions like rain and wind, its been pretty windy lately.
http://www.chromebagsstore.com/appar...broadmoor.html

The Anza- The description says that its good for wind and rain conditions.
http://www.chromebagsstore.com/appar...nza.html?c=124

I don't own any of these so you're pretty much on your own. These are just some of the things that I have been looking at. You could probably pick up a base layer from what you save on either one of these two jackets.

Let me know how it goes because I'm gonna be riding in cold conditions again soon, too. I just want to know if some clothes really make a difference.