'White Wonder' is a bit of a slow grower, but has the potential to get big. My original bush was in an area that didn't get much sun for half of the year. A new one I planted from a cutting is already bigger than it and is located out in the full sun most of the day year round.
I am not as fond of the red and whites as I am of the white and blue combos, but this is one of my favorites. In my zone, this one can often still be blooming at Christmas time and it looks like a natural decoration with it's big red flower buds and that pop open to display the red veined white corolla or skirt.