North Jersey, Lehigh Valley, or Philly

[Daniel Kosciuszko]

I am ready to start investing in properties with the BRRRR method and am trying to figure out which of these three areas is the best? For North Jersey, I was thinking Newark since I am familiar with that area and rents are high, but I don't know much about philly/Lehigh Valley market. I am willing to learn more and study another area if its worth looking into. Please advice before I stick to one market. Thanks!!