Great stuff, Evelyn.
I especially like Expose, Better than Butter and Spiral Galaxy although I don't grow them.
Sergey is a must have, but is missing in my collection here. It will be added one of these days.
I do have Florentine Silk and Dipped in Dots and I like the looks of them too, but no blooms so far. Florentine Silk has rotted two years in a row, but I still have plenty of rhizomes of it and they are in a much better spot now, so I hope to finally see some blooms next year.
So nice to get Don't Stop Believing as a bonus. I had to buy mine, but was happy to so as I have wanted it for awhile. Although I don't grow a lot of pink irises, lately I have done some efforts to add some.
Sorry that you have to work with clay soil. I guess it has some good water holding qualities that can be useful even for irises in a summer dry climate such as yours, but it is not fun to work with.