The food in New Jersey diners is tasty, and the food in Pennsylvania diners is bland. In fairness to Pennsylvania, I have not been to diners in the western part of the state. The ones I have tried are from Harrisburg east. I've never had a satisfying meal at any of them, and I've tried breakfast, lunch and dinner. On the other hand, I've never had a bad meal at a Jersey diner.
I was hungry, so it was a few bites in before I thought to take a cellphone picture!
My most recent one was this week in the town of Washington, far west enough that the area looked like Pennsylvania. But my lunch at the Washington Diner was one of the best ever. I ordered a roast beef and swiss double stack, accompanied by fries, cole slaw and pickle. The roast beef was very high quality, rare and fresh; the vegetables on the sandwich were fresh and crisp. The fries were classic diner fries, well lubricated but not greasy. Along with a Pepsi, the check came in at $10, a real value.