If you're tired of Subway or Quizno's, then try Capriotti's. The Bobbie definitely get's people's attention by being a Thanksgiving style sandwich but don't shy away from many of their other great sandwiches such as the Grilled Italian.
The only bad things I've noticed with this chain of restaurants is take out is the way to go since seating is very limited. It is also highly recommended to order by phone so you don't have to stand around for 10+ minutes waiting for your sandwich.