There are two large ones fairly close to me, Stop & Shop and Adams. Most of the time I shop at Adams if I need to hit a big supermarket, mostly because it's slightly closer and I have fewer roads to cross. Stop & Shop is open an hour later and has a slightly better selection, and is probably a bit cheaper, but not enough to warrant the extra effort to get there most of the time. In both cases I have to pass by Wendy's, McDonalds, and Burger King to get to either one, so in addition to groceries I always end up carrying a sack of burgers home, too. 
