I would think your best bet would be the Road To Calif Quilt show, that way you could see alot from the local vendors. Yes, yes do yourself a favor and visit Ms. Burns.
here is link for a search i just did:
http://www.yelp.com/list/quilt-fabric-shops-san-diego
there are ton more then listed thats why i highly advise the show. Oh i do miss all my old favorite stores from when I lived there.
have a great time.