My first flight riding US Airways I needed an Ass-pillow bad!!! but that was probably 6 or 7 years ago, oh yes...those harden seats during my flight from Phoenix to Dallas. I remember those twitching and wincing experience and then Ass relieve once I've got off my seat for arrival. What's was up with that?!? two centimeter cushion seats?
Nowadays I've used US Airways going to PHX for connecting flights, and it feels that there doing away those uncomfortable economy seats, well maybe a slight upgrade to half an inch of padding, but those rides have gotten better now.
The service is okay, some flight attendants smile, talk a lot, or just look tired of their job. They do have decent rates, but hey you get what you pay for and still serviceable.