I have a few that bloomed the first year I got them, then haven't bloomed since. These first bloomed in 2013, and I would really like to see them again:
Abiqua Falls - stunning and more lavender in bright sun, it takes on this softer blue in shade:
Silken Trim - I got this as a bonus and really liked it. The darker blackish wine coloring on the falls really makes it stand out from a distance.
And Starship Enterprise - I love this one and it grew a lot last winter. Thought I would finally get bloom again, but alas...