From Arby’s to Portillo’s, diners share the chain sandwich shops serving the biggest, juiciest hot beef sandwiches.

People come to Arby’s for one thing: curly fries. And then most of 'em figure: Might as well order a roast beef sandwich. With six distinct variations of beef sandwiches on offer, you might not know ...

Diners name the chain restaurants with the best roast beef subs, praising juicy meat, generous portions, and classic flavors.

Why settle for an ordinary roast beef sandwich when you can sink your teeth into one that's been upgraded? Here are 16 ways to take yours to the next level.