In fact, I went to the RB one last night (Saturday) and it was absolutely 100% packed to the gills. The line goes out the door and you have to wait a bit to get a table. That location is always full on Fridays, Sundays, and Wednesdays, too. I’ve never tried the other days.

Mission Gorge is also always pretty full.

I’ve also tried Clairemont, La Mesa, and West LA/Brentwood. I don’t remember them being quite as crowded, but they still seemed to be pretty popular.