I love Van Camp's Pork & Beans. They have a mildly sweet flavor, but with the great flavor of the beans coming through. And I can taste the pork. They compliment hotdogs and little smokey sausages perfectly, too.
After that, it's B&M Boston Baked ebans, with that rich mollases flavor. Coming in a close third, give me most of what Bush's Baked Beans has to offer.
Of course, your own favorite bake bean recipe will be better because you can tayloy it to your favorite flavors. but for pre-made, flavored, canned beans, those are my favorite three, in that order. Bonus, they can all be doctored if I feel the need.
Seeeeeeeya; Chief Longwind of the North