Best high-end spa on Oahu?

I’m looking to by buy my wife a spa package as a birthday/anniversary gift. Willing to spend a bit as this is a milestone birthday.

I was leaning toward either turtle bay or four seasons ko olina. Also looked at Halekulani and Moana surfrider websites. Most of them are priced pretty close and they all offer kamaaina discount.

Was wondering if people have any preference or reviews for a spa day at one of these properties?