What do you like in a bantam? Since you're the one who has to look at them, feed them and care for them day after day after day - get what you like. I learned that a long time ago when I was showing dogs. I was never as happy getting what would show well as I was with the animals I chose because I liked them. The judge sees them once. You live with them.
(one that note, I like your choice of the D'uccle. Mine are about the prettiest, sweetest (although, not the brightest) chickens I have. We will require pictures of your show bird, too!) lol
Best wishes for a fun and successful show career!