Hi call ducks--I don't know much about showing ducks, but are you talking about a mixed-breed show? And you want to know what kind of duck is more likely to get good marks among other types of ducks?
If so, I would try something like a Magpie or Ancona. They both have very interesting, unique, and attractive markings. Magpies can be hard to show in Magpie-only shows because the markings are hard to perfect, but among other breeds, they may be striking enough to stand out even if they're not perfect. Anconas, like the Magpies, have black & white markings, but theirs are random instead of in specific patches. Both types of ducks are said to be calm and easy-going (as ducks go), though I have no personal experience with them.
Good luck!
Edited to add: And since you're planning ahead, you have time to reserve ducklings from Holderread for next year. He produces some of the best quality birds in the nation, but he also tends to sell out. Do a Google search for Holderread waterfowl and he'll turn up. You have to print the form and mail it in snail mail, but it's worth it for the quality. Good luck!
