Potbelly Sandwich Shop

Customers, per Yelp reviews, consistently call out both the Mama's Meatball Sub and the Italian Sub as great items on Potbelly's menu.

Their big sub has around ⅓ more meatballs, cheese, sauce, and bread than the original, while the skinny is around ⅓ smaller than the standard version. They also offer fresh bread.

Dave's Cosmic Subs

The meatball sub at Dave’s Cosmic Subs is the most reviewed and popular item for many customers on Yelp. Their meatballs are particularly tender and juicy.

The sandwiches are also loaded with marinara, cheese, and garlic, and most of this restaurant's subs come with Dave's cosmic sauce, which adds an extra Italian-dressing flavor.

Wawa

Philadelphia Magazine praised Wawa's meatball sub for its customization. Wawa allows customers to pick their roll, toppings, seasoning, and toasting preferences.

The meatballs, marinara, and cheese aren't spectacular, but the endless customization options available at Wawa set their subs apart from anywhere else.

City Sandwich

The meatball sub at City Sandwich is made with a combination of pork and chicken Portuguese Alheira sausage, topped with tomato cream sauce and mozzarella cheese.

Yelp reviewers note that the sandwich is large and very filling and they were also impressed by how easy it is for a large group to receive exactly what they ordered.

Capriotti's Sandwich Shop

The Capriotti's meatball sub has two types of cheese, provolone and romano, with reviewers praising the high-quality ingredients used in the sub.

You can also customize by adding or removing cheese, peppers, or extra spices. Its bread is also thick and hefty, which means you can double up on the meatballs.