Tried Big Papa in Beverly, as well as the waterfront deli right around the corner from it. Big Papa uses awful bread. Like supermarket italian bread and throws lobster on it asks ya if u want lettuce or mayo.
The lobster was tender and great. As a sandwich not the best.
The waterfront deli-- not so great but accepatble.
Theres a little portugese place in Gloucester on the water- good lobster rolls. Good french fries too. They get those sardines once a week from portugal too.
Tried another place in Rockport, a fish store in pigeon cove on the water. Terrible unless you eat gallons of mayonnaise by the spoon.
My favorite lobster rolls are still in Maine.