That is just a stunning display!! I've seen one as large at a show, and the fragrance is just heavenly. I see you have another one ready to bloom right next to it.
I have a young gigantea, the largest leaf is about 7-8inches long. I've had it a year and it seems to be doing well, though it's getting really root bound and I'm hesitant to repot it... (Mounting just doesn't work in my environment) I'm amazed by how much sunlight it can take. I knew they like high light, but it's growing alongside my high light requirement plants.