Obviously NYC has way more options for foodies but JC and Hoboken have some good grub. There are so many fitness centers in Hoboken. I don't know what type of nightlife you like (ex. loud club type bars, pubs, raves, indie concerts, etc.), but Hoboken is limited to different types of bars and JC has some bars and a couple of clubs. I think based on what you said, living in an area of JC walking distance to the PATH would be a good fit for you so that you have access to EWR, Hoboken, and NYC.