I just left it, got a chance to use the showers and the 15-minute massage service. Shower is very good, well stocked with L'Occitane amenities as you noted. Also a vanity kit, dental care kit with mouthwash, and a "shower bonnet". The A AC showers have a "slightly" larger rain shower head, and also side shower heads. From a pure shower itself standpoint, A AC is better. However, everything else in the Centurion lounge showers is better than the A AC showers.

15-minute massage was excellent. It was clothes on and all upper body.

Also got to the lounge in time for breakfast, just before the changeover to lunch began. Breakfast foods were very good in general, I thought the almond bread French toast was just average, but it may have been because I came right at the tail end of the breakfast service. They also offer plain Greek yogurt with five different fruits you can mix in with it.

Now that I've been able to avail myself of everything the lounge has to offer, I can safely say it is the best lounge at DFW in my opinion. It is also better than at least the JFK Flagship Lounge, and close in quality to some of the international F lounges I've been to in Asia. Overall, an excellent lounge, especially in the USA!

And I've been there enough now that one of the employees welcomed me back, I'm surely among its most frequent visitors in its first month!