No discussion on this. This list is definitive and final. This list goes worst to best.
Fun-size Mounds. Literally barf city.
Source: sugartown-sweets.blogspot.com
Mini NECCO Wafer rolls. Terrible, but still a step up from Mounds.
Source: facebook.com
Mike and Ike
Source: candywarehouse.com
Almond Joy. Slightly less bad than Mounds.
Source: freephotooftheday.com