Two fireman brothers created Firehouse Subs in the 1990s; company has 1,000 locations by 2016. Burger King's parent company purchased it last year, and it's booming like Popeyes.
Popular Firehouse Subs is pricey. One customer nicknamed the restaurant "Finesse Gods," while others spent $13 to $16 for a meal.
Jimmy John's is known for its no-frills clubs, cubanos, and melts, as well as its "Gargantuan" sandwich.
But like the other chains on this list, Jimmy John's has its fair share of critics that say the chain's sandwiches just aren't worth the price.
Jersey Point Pleasant, N.J.'s Mike's opened in 1956. It's fifth-largest in the sector and known for its fresh subs and charismatic CEO.
Jersey Mike's consumers have noticed a premium for offering "the most genuine tasting submarine sandwich available" Jersey Mike's price isn't popular, despite the chain's premium sandwiches.
Chicago's Potbelly is known for its toasted sandwiches, sides, and milkshakes.
Potbelly is on the mend, posting excellent revenue growth in its most recent quarter and outlining aggressive expansion ambitions.