Most of my experiance is with Pekin ducks. They are good layers,not very noisy and are very hardy birds.
From what I understand runner ducks are very prolific layers. An egg a day at maturity from what Ive heard.
I would recomend Pekins,Khaki Campbell or another big bodied duck for where you are.
Murray McMurray hatchery is about the best when it comes to birds and poultry. They deliver through the mail. Check them out online. Call or e mail them, they will answer any other questions you might have that
I cant answer.
Hope this helps.