US Airways pioneered the ‘reverse herringbone’ business class seat, which is one of the best in the sky. As a result their business class hard product on Airbus A330s is really up there compared to some of the best airlines in the world. Cathay Pacific, EVA Air, and American among others have followed suit with their own versions of the seat.
And US Airways has unprecedented international upgrade availability right now. I don’t expect it to last.