Old City is a good spot, less degenerates, North, West, and South Philly, are warzones that have no chance of recovery...
But this all depends on your budget...
Throw Conshohocken to the mix

. I swear if I would had stayed up there, that was going to be the endgame of getting a crib or apartment over there.
Overbrook is okay depending on where you live at.
West is not that bad if you are near the hospital and college parts and not in the shytty areas. Now Southwest

NAH
North
South

. Its pretty much how it sounds. You either deal with CACs

or grimy Sigel Gang dudes

.
Overall, its pretty much who you know and minding your own fukking business. I don't know if that shyt applies anymore with all the foolishness going on up there, but compared to living in other cities in the North East. You can truly make it in Philly if you have heart, the brains, and strength to manage in the City of Brotherly Love
