Getting to Xfinity Arena in Philly

Hello all. I’m heading to a concert at Xfinity Arena next Friday, but there’s also a Phillies game going on at the same time. I imagine traffic is going to be a nightmare so I’m looking at transit options. Never taken trains to Philly, but I’m guessing that SEPTA is more reliable and has more brain cells than NJ Transit.

Any favorite stations you like to depart from? Tips or tricks?