The centurion side of the centurion lounge has been an oasis of calm every time I've been there. If the best oneworld lounge in the system (Pier F) wasn't just down the hall there wouldn't be a question here but as it is I think I prefer the Centurion lounge for food (its a real ala carte dining) and Pier F for sitting / hanging out as well as showers etc. Suggest doing both, they are both about as good as airport lounges get.

The normal side of centurion lounge is ok but if you have access to Pier F I would not bother.