I am glad you like the facility. IMHO, the lounges in PHL and CLT are in better condition and layout, especially the one at CLT between C&D concourses. For others, such as the ones in PHX are just standard. On the other hand, the worse example would be the one in LAX with dark and gloomy ambience and a musty smell to add!

Of course, US Airways lounges in general tend to be less crowd comparing to some United operated ones. I remember trying to squeeze into a United domestic lounge in ORD a few months back, there was hardly any room left and people were actually spilling out to stand around the reception area!