the white petals are narrowish with a slight twist. Prone to be temperature sensitive. While 'White Christmas' will have petal reflecture as the flower ages 'White Fantasy' remains pretty much flat across the face of the flower.
this plant is slightly shorter in size than 'White Christmas' (bred by BL Cobia) and it is wider. The phylloclades on 'White Fantasy' are also slightly longer and broader (source: FaceBook: Tony Brindley).