The Retro Arcade in Sharon, PA is my favorite Western PA location. They keep their games pristine, and I have never been in there wishing that a flipper be replaced, a scoop fixed or a playfield cleaned. They have the most pristine set of pins that I have played.
There are between 45 and 50 pins there, including recent games from JJP, Stern, American Pinball, Spooky and CGC. Their collection is System 11 pins and newer. They are also the only location I am aware of in the area to have all JJP pins on location.