The thread "Vendor list" in
Irises forum most of these are pretty good suppliers, and were all recommended by folks on the forum. As to "personal favorites", a lot depends on what "type" of iris you are looking for....new ? historic ? median ? rebloomers ?....some of these vendors "lean" towards one type, or another, and that can make a lot of difference in where a person wants to shop.
That being said....and all things being equal, I would have to say that if Superstition has what you want.....that's the place I would buy it !