Rittenhouse has long been La Colombe's coffee turf, but plenty of competition is easing into the Square's ritzy environs recently. The latest shop to pop up comes from up north — Joe Coffee, which has eight locations in New York, has opened its first Philly location. (A second one is on the way.) Modest indoor and outdoor seating provides the proper perches for Joe's coffee, roasted in NYC, and Black Cat espresso, provided by Chicago's lauded Intelligentsia. They've also got a light food selection, mixing purveyors from both New York and Philly.