I like to see a lot of blooms at one time....length of season doesn't really matter to me if plant puts out only a bloom here or there.
Ashton Giggles was eaten off by deer last year....it made up for it this year.
Sabine Baur was another favorite...
Inherited Wealth always puts on a good show...
I've enjoyed Suddenly Blue immensely since I acquired it a few years ago....