I've been looking for a good cheesesteak for a while now, and PSC's is definitely the best I've found. Meat was tasty, bread was soft, and there were plenty of toppings to choose from (mushrooms, onions, four or five types of peppers). I have never been a fan of cheez-wiz, but somehow on this sandwich it just "clicked". It's more of a sauce than a cheese, and it added some needed moisture to the slightly dry beef.
I also tried the chicken cheesesteak, which was less impressive. The chunks of chicken looked nice, but they were chewy and flavorless. The toppings (provolone cheese and mushrooms) tasted fine.
I took my order to go. The sandwiches were wrapped so that the paper was tucked between the cheese and the bread, keeping the bread from getting soggy on the way home. It was a small touch that I really appreciated.