I'm sat in the Qantas First Lounge right now having salt and pepper squid and a glass of champagne, personally i cant see past this lounge when I'm here, but not sure if you will have acesss...? Cant comment on any others
Last time I entered via LAX (New years Eve) it was slooooooow, 1.5 hours despite permanent residency. We were just in a really bad line plus some inefficiency. I'm Global Entry which counted for nothing, nearly everyone was being sent to a secondary screening line.