ZaZa has way more hos than the Ritz. Lol
Always tip the staff well (especially valet) and you'll be fine.
Depending on the night of the week and time of year I can think of a few off the top of my head: Ritz, ZaZa, Omni, W, Palomar, Lumen. The key is following their routine networking nights (First Fridays, Last Tuesdays...you get the idea) and/or the events in the area.
I say again: Always. Take. Care. Of. The. Staff. They are there to help you and they will.
(don't look like a hooker, don't act like a hooker, never approach anyone, act like you belong there)