I think many top notch mail orders carry a variety of choices. I found a nice selection at a local garden centre. They are now receiving the 2013 seeds and haven't been picked over yet
I'm going to try these this year and alternate the different varieties along the side wall of the house. I think it will look cool with different heights and flower colours inter-mixed
3 feet Knee High light fragrance, early bloomer
3-4 feet Cupani high fragrance Heirloom vibrant colour. small flowers with only 2 per stem
4-6 feet Early Spencer, little to no fragrance. Big Ruffle blooms
6 feet Scent Infusion (includes Albutt Blue, April in Paris, Cathy, Fire & Ice, Heathcliff, Juliet and Memories) Even though they are large grandiflora blooms, they are labeled as intense fragrance)
6 feet Statesman Mix (includes America & Senator Heirlooms) later bloom - highly fragrant with bi-colour streaks
6 - 10 feet Sweet Old Glory (includes Heirlooms Queen Alexandria, Dorthy Eckford and Lord Nelson) Strong Fragrance.
I will winter sow some of each and start indoors too.