Whisk together the sour cream, mayo, sugar, salt, mustard, vinegar, pepper & paprika.
Combine remaining ingredients (except hard boiled eggs) in a large bowl. Add dressing on top and stir until well mixed.
Slice hard boiled eggs first in one direction, then turn and slice in the other direction, so that you have small pieces of hard boiled egg. Leave 2-3 eggs to slice just once and garnish the top of the salad with. Stir small diced egg into the salad. Garnish with remaining egg. Refrigerate until ready to serve.