Not in Philly, but close
I just went to Head Trip in Haddonfield, NJ earlier this week. I had my hair cut by Diana DiMedio.
Good lord, that woman knows hair. I have slightly (I mean VERY slightly) wavy hair and she cut it dry, washed it with Deva products and showed me how to diffuse it and scrunch it so it would encourage waves and fullness. During the cut she paid a lot of attention to how it moves, how it naturally bends or falls and where to cut out the weight so it would have more body.
Every single salon I have ever been to cuts it wet, combs it straight and blows it straight afterwards, so it always looks like ass the next day when I wake up to it's normal, non-blowndry texture. I honestly could not have been more impressed with this place.
You can take PATCO there to the Haddonfield stop and walk the 3 or so blocks to the salon. It's at 14 Hadoon Ave and the phone # is 856-427-6775. My cut was $62, which is the most I have ever spent but I'd do it again in a heartbeat.