there are 2 SCs at LAX. The one between terminals 2 and 3 is the new lounge and quite nice. It can get crowded. The old club in T-2 is adequate. The centurion lounge is in the Tom Bradley international terminal and airside is only connected by a bus to the delta terminals. Its a slow bus connection. Unless you get to the airport really early, or your flight ends up leaving from TBIT, I wouldn’t mess with the centurion lounge.