Just my 2 cents: Don't forget Gary Hester www.wildirisrows.com . Very generous. Each time I've ordered he's sent 2 and 3 !! rhizomes of each ordered and bonuses as well. I've had wonderful iris from Stouts, Schreiners, Superstition and a good experience with Blue J iris as well.
I'm envying all the new blooms, mine in Denver is probably 2 months away. I think I saved everyone this winter but 1 or two from the crazed rabbit population- but I had to put up fences.