Clearview Del Sol
Bright Yellow -- nearly glows in the dark!
I know, extreme yellow isn't for everyone, but I can tell you that I had one appreciative neighbor because she loved looking over to the field and seeing this large yellow beacon during the summer. I gave her free reign to cut what she liked and she always took Del Sol.
Easy cut, big 6' plant, strong stems to keep blooms upright. I love that the petals curl back towards the stem and its a favorite of mine.