Place eggs in a saucepan in a single layer with enough water to cover by 1 inch. Cover the saucepan and bring water to a boil over high heat. Once water is boiling, remove from the heat and let eggs stand in the hot water for 15 minutes. Pour out hot water, then cool eggs under cold running water. Peel once cold.

Dry eggs thoroughly with paper towels, and slice them in half lengthwise. Remove yolks, and place in a bowl. Mash yolks with a fork, and stir in sugar, salt, onion powder, garlic powder, and white pepper. Add mustard, mayonnaise, salad dressing, and vinegar, one at a time, stirring to incorporate each ingredient before adding the next.