FWIW I planted Sulphurea as they were less expensive than most and advertisied as:
"....plants are very tough and hardy, which makes them perfect lilies for beginners. Prolific bloomers. Will spread 4-6 feet, bloom from mid-summer to early fall and grow in zones 4-11."
I was looking to see if lilies could survive my huge water level fluctuations. So far they are living up to the advertisement