So many manufacturers, so many product lines, etc...hard to really answer your question precisely. Also shipping costs and local availability can be an issue. You could check out Verea, or MCA (which is in California), or look at some of the other manufacturers on our page Tile Roofing Manufacturers List. But if I were you, I would do a google search for "clay roof tile suppliers california" and contact 3 or 4 roofing supply companies near you that carry clay roof tile and call and ask them for a couple of recommendations that would fit your requirements. See which brand/manufacturer is recommended by the most suppliers. That would be the best way to figure this out.