Hey San Diego! Suggest some breweries for me to visit this January

I'm visiting San Diego this January with my significant other for a conference. Well, more like he's attending the conference, I'm free to roam. I would love to visit some breweries while I'm down there and already definitely plan to drink up at Stone, but I also wanted to get a taste of some local smaller breweries too.

Any native and knowledgeable San Diego-ans have a suggestion for sweet local breweries unknown to the outside world?