I love bud builders.
Here in the tundra, if we a plant to bloom a long time or late, we need to rely on a much smaller subset of reblooming daylilies or Very Late daylilies, which are nice, but tend to be simpler forms and colors.
In the south, I think a grower might prefer a pretty rebloomer. But up here... if I can get a plant to bloom hard for 4 weeks and bud build for another two or three weeks, I'm pretty excited about that. ...because those fancy Evergreen rebloomers don't do it here.