That’s just the opposite from what I have found. Given the choice between the Delta lounge and the Amex lounge, I always choose Delta lounges. They also seem to be less conveniently located.

That’s especially true in ATL with a lounge at each gate for delta more or less. I still don’t know where the Centurion lounge is in LAX as often as I’ve been there.

Yea def at Atl. The centurion there is full 50% of the time I go, is in a weird spot, and it's crowded a good portion of that. (But it's beautiful) And the Delta at each term is nice. May be a bit of an exception as its a Delta hub.