Lucille's! They have some of the tastiest ribs around SoCal.
I've been to the ones in Brea and Long Beach. Now I hear there's gonna be a new one just a block down the street from me in Tustin! Yessss....
http://www.lucillesbbq.com/

A close second for tri-tip is Wood Ranch BBQ in Anaheim Hills and Lakewood.
http://www.woodranch.com/
They don't slice up the tri-tip, but serve it in a big steak and it is tender and juicy!



Steve