This above advice will keep you at your current office job. After 6 years, im sure you are aware that your current times are not competitive for USAir or UA, unless you have an in. Go to the one with the best work rules. The one with the best rules might go down like Comair, but at least working 121 while applying to the Legacies and LCC, granted that this is your ultimate objective. Network while you are at your new job, because many of these pilots will be moving on to as one guy put it "The land of rainbows and unicorns," that is the Majors.