I found Valdivia farms at the farmer's market here in Irvine, and was seriously impressed with their produce. They are located in Carlsbad but hit several of the farmer's markets in Southern California, and are worth checking out if you see them.
They may not have the widest range of produce but what they offer is top notch. Best berries I've had in a decade and heirloom tomatoes that ACTUALLY taste like tomatoes. I'm a new fan and thought it was worth spreading the love.