Being in PHL offers plenty of nonstop routes + lots of competition with WN so that's good. Also, I've never been upset with any of the employees attitudes as a lot of people on here have been. Growing up in PHL I guess I'm just used to it...

PHL & US go together like cheese and steak I guess. If there were more options out of PHL on legacy carriers I'd be inclined to change....CO & UA are tempting. My family has recently relocated to western South Dakota and flying UA there is my only real option these days - but I've never had a problem getting moved up to E+, so I have no real complaint yet.