My choice is completely illogical. But it is Sharifa Asma. She not my best grower, doesn't really care for full sun, and loves her fertilizer. In other words, she's a bit of a diva. But its the fragrance! I just love the frangrance of Sharifa Asma. So today she is my very favorite. But ask again this fall. I've got about eight new Austin varieties I've never grown before. I may have a new one then!
I've posted this photo before, but its the only one I can find right now. Sorry!