No problem! I lived in Philly off and on (mostly on) for 5 or 6 years up until about a year ago. The 'grunge'/grime is probably a bit of a culture shock at first (depending on what you are used to) but it's a pretty nice city once you get over that.

If I were to move back, I would probably outside of the 'city' Philly along the main line. Lowest grime-factor there is, as far as I know.