Jane,
I am impressed with your winning that first year. I remember my first year and my collection of three were three different types and heights in three different vases. In New York we had an award for person with the highest percentage of blues and one person who would enter fewer than a dozen usually won as she had a good eye for what was blue ribbon worthy. But here that wouldn't work as it would discourage bringing in more varieties. In bad weather years I've taken in varieties that were no better than 3rds to show one that was new to the area.