'Hercules' FCC/RHS is one of the nicest of the Norman's Bay clones, in my opinion. Its huge (hence the name) and the color is wonderful, and carries a nice fragrance, as do most of its type.
Waldor is selling blooming-size mericlones of NB 'Low's'. there are several cultivars that are still being circulated, but mature original divisions will retail 150-350 and up.