Unforunately the quality of US Airways first class product has deteriorated significantly over the past year as they continue to reorganize under Chapter 11. Hopefully things will improve under the new HP/US management team.
In spite of the crappy meals and dirty cabins, the friendly inflight service, the snack basket, and the booze remain top notch! I took a trip on NW in early April just to compare, and everything was absolutely awful. I had always been pleased with NW in the past but after that experience I refuse to fly them anymore. The F/As were nasty lazy b****es, our death trap of an old DC-9 nearly crashed as we were lacking oxygen, and we had endless delays - I can't begin to describe how terrible it was. US is way better, even if they serve happy meals on transcons!